Problem Rank List

This list is generated based on igor's probs.txt file, which is posted on his blog.
It's generated in 2006, but it's still very useful.
Thanks for sharing.

     100     63373      The 3n + 1 problem
     102     15736      Ecological Bin Packing
   10018     12312      Reverse and Add
   10071     12271      Back to High School Physics
     105     11471      The Skyline Problem
   10055     11238      Hashmat the Brave Warrior
   10038     10401      Jolly Jumpers
   10013      9934      Super long sums
     136      9906      Ugly Numbers
     101      9831      The Blocks Problem
     272      9830      TEX Quotes
     108      9210      Maximum Sum
     591      9066      Box of Bricks
   10189      9066      Minesweeper
     458      8933      The Decoder
     495      7419      Fibonacci Freeze
     488      7290      Triangle Wave
   10035      7188      Primary Arithmetic
     128      6865      Software CRC
     382      6480      Perfection
     113      6419      Power of Cryptography
     673      6379      Parentheses Balance
     706      6345      LCD Display
     406      6312      Prime Cuts
   10062      6178      Tell me the frequencies!
     299      6168      Train Swapping
   10004      6034      Bicoloring
   10110      5989      Light, More Light
     103      5917      Stacking Boxes
   10082      5815      WERTYU
     494      5808      Kindergarten Counting Game
     160      5807      Factors and Factorials
     543      5764      Goldbach's Conjecture
     583      5736      Prime Factors
     369      5643      Combinations
     264      5473      Count on Cantor
     483      5355      Word Scramble
     119      5313      Greedy Gift Givers

     424      5283      Integer Inquiry
     408      5240      Uniform Generator
     371      5203      Ackermann Functions
   10008      5025      What's Cryptanalysis?
     138      4977      Street Numbers
   10696      4976      f91
   10041      4971      Vito's Family
   10300      4941      Ecological Premium
     492      4933      Pig-Latin
     401      4874      Palindromes
     106      4872      Fermat vs. Pythagoras
     445      4855      Marvelous Mazes
     151      4853      Power Crisis
     541      4840      Error Correction
   10098      4839      Generating Fast, Sorted Permutation
   10152      4764      ShellSort
     579      4755      ClockHands
   10006      4735      Carmichael Numbers
     441      4700      Lotto
     575      4684      Skew Binary
     499      4489      What's The Frequency, Kenneth?
     686      4451      Goldbach's Conjecture (II)
     612      4449      DNA Sorting
     524      4423      Prime Ring Problem
   10107      4420      What is the Median?
     476      4406      Points in Figures: Rectangles
     112      4344      Tree Summing
     107      4266      The Cat in the Hat
   10370      4254      Above Average
     324      4216      Factorial Frequencies
     111      4117      History Grading
   10033      4111      Interpreter
     374      4108      Big Mod
   10106      4084      Product
     568      4055      Just the Facts
     701      4053      The Archeologists' Dilemma
     412      3999      Pi
     195      3984      Anagram
     400      3927      Unix ls
   10340      3898      All in All
     256      3883      Quirksome Squares
     344      3848      Roman Digititis
     120      3800      Stacks of Flapjacks
     729      3774      The Hamming Distance Problem
   10127      3745      Ones
     231      3732      Testing the CATCHER
     530      3714      Binomial Showdown
   10327      3713      Flip Sort
     694      3701      The Collatz Sequence
   10019      3696      Funny Encryption Method
     350      3687      Pseudo-Random Numbers
     116      3678      Unidirectional TSP
     640      3660      Self Numbers
   10079      3604      Pizza Cutting
     674      3601      Coin Change
   10222      3487      Decode the Mad man
   10405      3461      Longest Common Subsequence
     294      3389      Divisors
     305      3389      Joseph
   10783      3381      Odd Sum
     444      3370      Encoder and Decoder
   10034      3363      Freckles
     122      3353      Trees on the level
     440      3342      Eeny Meeny Moo
     104      3328      Arbitrage
     438      3327      The Circumference of the Circle
     443      3314      Humble Numbers
     439      3285      Knight Moves
     490      3282      Rotating Sentences
   10469      3273      To Carry or not to Carry
   10346      3255      Peter's Smoke
     146      3249      ID Codes
   10324      3248      Zeros and Ones
     498      3231      Polly the Polynomial
     477      3215      Points in Figures: Rectangles and Circles
     484      3209      The Department of Redundancy Department
     392      3191      Polynomial Showdown
   10200      3180      Prime Time
   10050      3158      Hartals
     190      3155      Circle Through Three Points
     167      3139      The Sultan's Successors
   10003      3098      Cutting Sticks
   10010      3078      Where's Waldorf?
   10302      3046      Summation of Polynomials
     755      3041      487--3279
     386      3033      Perfect Cubes
     623      3012      500!
     118      2976      Mutant Flatworld Explorers
   10260      2966      Soundex
     572      2964      Oil Deposits
     133      2944      The Dole Queue
     147      2931      Dollars
   10515      2908      Powers Et Al.
     200      2905      Rare Order
   10000      2885      Longest Paths
     446      2839      Kibbles ``n'' Bits ``n'' Bits ``n'' Bits
     713      2835      Adding Reversed Numbers
     793      2803      Network Connections
     750      2792      8 Queens Chess Problem
   10282      2768      Babelfish
   10252      2738      Common Permutation
     356      2735      Square Pegs And Round Holes
   10209      2724      Is This Integration ?
     834      2719      Continued Fractions
   10424      2705      Love Calculator
   10161      2674      Ant on a Chessboard
     621      2667      Secret Research
     202      2660      Repeating Decimals
   10323      2647      Factorial! You Must be Kidding!!!
   10473      2642      Simple Base Conversion
   10066      2635      The Twin Towers
     455      2626      Periodic Strings
   10220      2601      I Love Big Numbers !
     291      2580      The House Of Santa Claus
     489      2568      Hangman Judge
   10099      2556      The Tourist Guide
   10070      2553      Leap Year or Not Leap Year and ...
     155      2489      All Squares
     333      2480      Recognizing Good ISBNs
   10137      2459      The Trip
   10009      2441      All Roads Lead Where?
     402      2427      M*A*S*H
     496      2413      Simply Subsets
     514      2412      Rails
   10432      2406      Polygon Inside A Circle
   10131      2396      Is Bigger Smarter?
   10235      2386      Simply Emirp
     536      2367      Tree Recovery
   10338      2350      Mischievous Children
     497      2344      Strategic Defense Initiative
     739      2334      Soundex Indexing
   10533      2317      Digit Primes
     414      2264      Machined Surfaces
     534      2255      Frogger
     573      2246      The Snail
   10530      2232      Guessing Game
     348      2227      Optimal Array Multiplication Sequence
     389      2206      Basically Speaking
     124      2202      Following Orders
     567      2200      Risk
   10812      2197      Beat the Spread!
     478      2185      Points in Figures: Rectangles, Circles, Triangles
   10579      2179      Fibonacci Numbers
     227      2158      Puzzle
   10699      2155      Count the factors
     576      2151      Haiku Review
     156      2145      Ananagrams
   10105      2142      Polynomial Coefficients
     459      2142      Graph Connectivity
     784      2134      Maze Exploration
     352      2130      The Seasonal War
   10195      2126      The Knights Of The Round Table
     110      2126      Meta-Loopless Sorts
     130      2116      Roman Roulette
     450      2114      Little Black Book
   10074      2112      Take the Land
     562      2107      Dividing coins
   10394      2105      Twin Primes
   10026      2102      Shoemaker's Problem
   10550      2090      Combination Lock
     847      2084      A Multiplication Game
   10104      2079      Euclid Problem
     417      2071      Word Index
   10591      2064      Happy Number
   10192      2049      Vacation
     232      2046      Crossword Answers
     725      2044      Division
   10048      2031      Audiophobia
   10450      2029      World Cup Noise
     516      2025      Prime Land
   10409      2001      Die Game
   10025      1983      The ? 1 ? 2 ? ... ? n = k problem
     191      1976      Intersection
     531      1969      Compromise
     357      1964      Let Me Count The Ways
     336      1958      A Node Too Far
   10929      1951      You can say 11
     271      1942      Simply Syntax
     340      1941      Master-Mind Hints
     117      1938      The Postal Worker Rings Once
     602      1938      What Day Is It?
     109      1926      SCUD Busters
   10310      1921      Dog and Gopher
     637      1913      Booklet Printing
   10014      1908      Simple calculations
   10168      1901      Summation of Four Primes
     275      1887      Expanding Fractions
   10042      1876      Smith Numbers
     624      1873      CD
     123      1859      Searching Quickly
     846      1855      Steps
     532      1851      Dungeon Master
     836      1846      Largest Submatrix
     482      1841      Permutation Arrays
     544      1825      Heavy Cargo
   10499      1819      The Land of Justice
     193      1787      Graph Coloring
     121      1785      Pipe Fitters
     474      1778      Heads / Tails Probability
     485      1774      Pascal's Triangle of Death
   10334      1774      Ray Through Glasses
     300      1772      Maya Calendar
     164      1770      String Computer
     315      1770      Network
   10608      1768      Friends
   10130      1760      SuperSale
     594      1756      One Little, Two Little, Three Little Endians
   10015      1750      Joseph's Cousin
   10142      1744      Australian Voting
     727      1730      Equation
   10305      1722      Ordering Tasks
     383      1714      Shipping Routes
     144      1710      Student Grants
     661      1710      Blowing Fuses
     740      1703      Baudot Data Communication Code
     216      1692      Getting in Line
   10789      1689      Prime Frequency
     884      1676      Factorial Factors
   10193      1674      All You Need Is Love
     320      1672      Border
     587      1666      There's treasure everywhere!
     555      1656      Bridge Hands
     537      1651      Artificial Intelligence?
   10611      1650      The Playboy Chimp
   10139      1641      Factovisors
     442      1639      Matrix Chain Multiplication
   10311      1632      Goldbach and Euler
   10196      1631      Check The Check
     201      1631      Squares
   10924      1629      Prime Words
     125      1626      Numbering Paths
     378      1623      Intersecting Lines
     699      1620      The Falling Leaves
   10420      1616      List of Conquests
   10474      1615      Where is the Marble?
   10101      1598      Bangla Numbers
   10190      1594      Divide, But Not Quite Conquer!
   10198      1585      Counting
   10931      1571      Parity
     642      1571      Word Amalgamation
   10215      1569      The Largest/Smallest Box ...
     619      1565      Numerically Speaking
     145      1558      Gondwanaland Telecom
     152      1554      Tree's a Crowd
     154      1543      Recycling
   10183      1531      How Many Fibs?
   10067      1530      Playing with Wheels
     448      1530      OOPS!
   10921      1526      Find the Telephone
   10181      1524      15-Puzzle Problem
   10179      1518      Irreducable Basic Fractions
   10622      1495      Perfect P-th Powers
   10286      1487      Trouble with a Pentagon
     159      1480      Word Crosses
     413      1478      Up and Down Sequences
   10922      1473      2 the 9s
   10049      1470      Self-describing Sequence
   10182      1467      Bee Maja
     409      1465      Excuses, Excuses!
     166      1465      Making Change
   10116      1460      Robot Motion
     306      1450      Cipher
   10063      1444      Knuth's Permutation
   10102      1441      The path in the colored field
   10221      1436      Satellites
     839      1430      Not so Mobile
     278      1417      Chess
   10044      1416      Erdos Numbers
     574      1413      Sum It Up
     153      1405      Permalex
     460      1405      Overlapping Rectangles
     343      1403      What Base Is This?
     114      1402      Simulation Wizardry
   10336      1394      Rank the Languages
   10036      1386      Divisibility
   10129      1384      Play on Words
     465      1379      Overflow
     558      1376      Wormholes
   10276      1374      Hanoi Tower Troubles Again!
   10125      1369      Sumsets
   10509      1363      R U Kidding Mr. Feynman!
   10361      1361      Automatic Poetry
     168      1361      Theseus and the Minotaur
   10970      1346      Big Chocolate
   10295      1343      Hay Points
   10299      1338      Relatives
   10465      1338      Homer Simpson
     469      1337      Wetlands of Florida
   10170      1335      The Hotel with Infinite Rooms
     337      1333      Interpreting Control Sequences
   10191      1328      Longest Nap
   10032      1323      Tug of War
   10219      1321      Find the ways !
   10487      1320      Closest Sums
     280      1319      Vertex
   10285      1313      Longest Run on a Snowboard
   10407      1312      Simple division
   10080      1307      Gopher II
     507      1304      Jill Rides Again
   10700      1302      Camel trading
   10508      1301      Word Morphing
     785      1301      Grid Colouring
     636      1296      Squares (III)
   10267      1295      Graphical Editor
     263      1293      Number Chains
     127      1292      ``Accordian'' Patience
   10245      1289      The Closest Pair Problem
   10002      1286      Center of Masses
   10140      1281      Prime Distance
     140      1281      Bandwidth
   10714      1279      Ants
   10400      1273      Game Show Math
     355      1268      The Bases Are Loaded
     630      1266      Anagrams (II)
   10404      1266      Bachet's Game
     115      1265      Climbing Trees
     253      1262      Cube painting
     454      1262      Anagrams
   10100      1251      Longest Match
     422      1250      Word-Search Wonder
     332      1248      Rational Numbers from Repeating Fractions
   10020      1247      Minimal coverage
     639      1246      Don't Get Rooked
   10940      1246      Throwing cards away II
     423      1244      MPI Maelstrom
   10258      1244      Contest Scoreboard
   10205      1243      Stack 'em Up
     161      1241      Traffic Lights
   10701      1239      Pre, in and post
   10583      1223      Ubiquitous Religions
   10360      1222      Rat Attack
   10077      1222      The Stern-Brocot Number System
   10298      1219      Power Strings
     311      1210      Packets
   10642      1210      Can You Solve It?
   10271      1207      Chopsticks
   10017      1206      The Never Ending Towers of Hanoi
     615      1205      Is It A Tree?
     326      1203      Extrapolation Using a Difference Table
   10800      1201      Not That Kind of Graph
   10297      1197      Beavergnaw
     471      1197      Magic Numbers
   10656      1197      Maximum Sum (II)
     628      1196      Passwords
   10443      1190      Rock, Scissors, Paper
   10452      1190      Marcus, help!
     486      1187      English-Number Translator
   10223      1180      How many nodes ?
     748      1174      Exponentiation
     436      1172      Arbitrage (II)
     129      1167      Krypton Factor
     429      1167      Word Transformation
   10684      1162      The jackpot
   10056      1157      What is the Probability ?
   10408      1155      Farey sequences
     700      1154      Date Bugs
     644      1154      Immediate Decodability
   10397      1150      Connect the Campus
     696      1145      How Many Knights
     539      1142      The Settlers of Catan
   10573      1140      Geometry Paradox
   10703      1138      Free spots
   10539      1137      Almost Prime Numbers
   10738      1135      Riemann vs Mertens
   10633      1133      Rare Easy Problem
   10093      1132      An Easy Problem!
     762      1132      We Ship Cheap
   10451      1129      Ancient Village Sports
   10347      1122      Medians
   10162      1116      Last Digit
     353      1113      Pesky Palindromes
   10702      1112      Travelling Salesman
     679      1109      Dropping Balls
   10242      1107      Fourth Point !!
     712      1107      S-Trees
   10427      1104      Naughty Sleepy Boys
     681      1095      Convex Hull Finding
   10226      1095      Hardwood Species
   10069      1093      Distinct Subsequences
   10502      1092      Counting Rectangles
     808      1090      Bee Breeding
     384      1084      Slurpys
     297      1084      Quadtrees
   10176      1083      Ocean Deep ! - Make it shallow !!
     141      1080      The Spot Game
   10815      1077      Andy's First Dictionary
     170      1077      Clock Patience
     585      1072      Triangles
   10187      1072      From Dusk Till Dawn
     608      1068      Counterfeit Dollar
     861      1060      Little Bishops
   10007      1058      Count the Trees
   10489      1056      Boxes of Chocolates
     820      1056      Internet Bandwidth
     325      1048      Identifying Legal Pascal Real Constants
   10377      1048      Maze Traversal
     843      1047      Crypt Kicker
   10534      1042      Wavio Sequence
   10415      1040      Eb Alto Saxophone Player
     377      1039      Cowculations
     598      1039      Bundling Newspapers
   10043      1036      Chainsaw Massacre
     148      1035      Anagram checker
   10903      1032      Rock-Paper-Scissors Tournament
     126      1032      The Errant Physicist
     641      1028      Do the Untwist
   10037      1028      Bridge
     571      1027      Jugs
   10365      1027      Blocks
   11000      1027      Bee
     711      1023      Dividing up
     437      1021      The Tower of Babylon
   10878      1020      Decode the tape
   10188      1017      Automated Judge Script
     302      1017      John's trip
     391      1011      Mark-up
     186      1008      Trip Routing
   10784      1006      Diagonal
   10945      1000      Mother bear
     542       999      France '98
     850       997      Crypt Kicker II
   10229       993      Modular Fibonacci
     825       993      Walking on the Safe Side
   10491       989      Cows and Cars
   10005       988      Packing polygons
   10341       988      Solve It
   10678       986      The Grazing Cow
     580       985      Critical Mass
   10392       974      Factoring Large Numbers
     273       972      Jack Straws
   10194       971      Football (aka Soccer)
     447       970      Population Explosion
     697       965      Jack and Jill
     468       964      Key to Success
     270       963      Lining Up
   10128       963      Queue
     526       961      String Distance and Transform Process
   10279       961      Mine Sweeper
   10016       955      Flip-Flop the Squarelotron
     301       953      Transportation
     435       948      Block Voting
   10054       947      The Necklace
   10935       939      Throwing cards away I
     187       938      Transaction Processing
   10141       937      Request for Proposal
   10012       928      How Big Is It?
   10364       928      Square
   10673       928      Play with Floor and Ceil
     260       925      Il Gioco dell'X
     501       925      Black Box
   10304       922      Optimal Binary Search Tree
   10303       918      How Many Trees?
     457       918      Linear Cellular Automata
   10810       907      Ultra-QuickSort
   10359       904      Tiling
     551       899      Nesting a Bunch of Brackets
     704       897      Colour Hash
   10422       895      Knights in FEN
   10490       890      Mr. Azad and his Son!!!!!
     131       889      The Psychic Poker Player
   10745       882      Dominant Strings
     177       880      Paper Folding
     220       878      Othello
     466       875      Mirror, Mirror
   10293       873      Word Length and Frequency
   10719       871      Quotient Polynomial
   10281       868      Average Speed
     540       864      Team Queue
   10078       862      The Art Gallery
     763       861      Fibinary Numbers
     397       861      Equation Elation
     895       860      Word Problem
     620       858      Cellular Structure
   10680       848      LCM
   10369       845      Arctic Network
   10147       843      Highways
   10040       843      Ouroboros Snake
   10051       841      Tower of Cubes
   10057       840      A mid-summer night's dream.
   10905       839      Children's Game
     626       839      Ecosystem
     307       830      Sticks
   10482       825      The Candyman Can
     143       821      Orchard Trees
   10763       820      Foreign Exchange
     188       820      Perfect Hash
     184       816      Laser Lines
   10126       815      Zipf's Law
     657       815      The die is cast
     132       814      Bumpy Objects
     254       814      Towers of Hanoi
   10330       811      Power Transmission
   10948       809      The primary problem
   10115       807      Automatic Editing
   10820       807      Send a Table
     208       805      Firetruck
   10290       803      {Sum+=i++} to Reach N
     651       802      Deck
     218       801      Moth Eradication
   10600       800      ACM Contest and Blackout
     821       799      Page Hopping
   10301       799      Rings and Glue
   10283       798      The Kissing Circles
     375       794      Inscribed Circles and Isosceles Triangles
     213       794      Message Decoding
   10500       792      Robot maps
     196       791      Spreadsheet
   10088       791      Trees on My Island
   10803       789      Thunder Mountain
   10344       789      23 out of 5
   10022       788      Delta-wave
   10589       788      Area
     523       785      Minimum Transport Cost
   10199       785      Tourist Guide
     394       783      Mapmaker
   10081       783      Tight Words
     481       782      What Goes Up
   10363       777      Tic Tac Toe
   10268       776      498-bis
     362       773      18,000 Seconds Remaining
   11005       771      Cheapest Base
     668       770      Parliament
   10620       770      A Flea on a Chessboard
   10494       767      If We Were a Child Again
     654       764      Ratio
   10496       761      Collecting Beepers
     737       759      Gleaming the Cubes
     142       759      Mouse Clicks
   10706       758      Number Sequence
     589       755      Pushing Boxes
   10523       755      Very Easy !!!
   10249       754      The Grand Dinner
   10664       753      Luggage
   10954       753      Add All
     638       746      Finding Rectangles
   10957       742      So Doku Checker
     183       740      Bit Maps
     741       739      Burrows Wheeler Decoder
     796       739      Critical Links
     812       738      Trade on Verweggistan
   10730       738      Antiarithmetic?
     677       738      All Walks of length ``n'' from the first node
   10790       737      How Many Points of Intersection?
     714       735      Copying Books
     418       730      Molecules
     726       729      Decode
     209       729      Triangular Vertices
   10326       715      The Polynomial Equation
     331       715      Mapping the Swaps
   10653       715      Bombs! NO they are Mines!!
   10112       710      Myacm Triangles
   10197       710      Learning Portuguese
   10596       707      Morning Walk
   10315       705      Poker Hands
     135       705      No Rectangles
   10852       704      Less Prime
   10201       704      Adventures in Moving - Part IV
   10679       703      I Love Strings!!
   10375       700      Choose and divide
     565       698      Pizza Anyone?
     467       695      Synching Signals
     756       695      Biorhythms
     665       694      False coin
     833       693      Water Falls
   10001       689      Garden of Eden
     614       688      Mapping the Route
   10154       687      Weights and Measures
   10213       687      How Many Pieces of Land ?
   10374       687      Election
     137       686      Polygons
   10177       685      (2/3/4)-D Sqr/Rects/Cubes/Boxes?
   10132       682      File Fragmentation
     652       681      Eight
     139       677      Telephone Tangles
     584       677      Bowling
     776       677      Monkeys in a Regular Forest
     165       675      Stamps
     162       675      Beggar My Neighbour
     327       674      Evaluating Simple C Expressions
     321       671      The New Villa
   10150       670      Doublets
     670       668      The dog task
   10393       668      The One-Handed Typist
     318       665      Domino Effect
     590       662      Always on the run
     314       659      Robot
     535       658      Globetrotter
     688       657      Mobile Phone Coverage
   10368       655      Euclid's Game
     556       652      Amazing
     703       652      Triple Ties: The Organizer's Nightmare
     601       651      The PATH
   10202       650      Pairsumonious Numbers
     134       649      Loglan-A Logical Language
     255       649      Correct Move
     545       647      Heads
     434       646      Matty's Blocks
   10518       645      How Many Calls?
     855       641      Lunch in Grid City
     245       641      Uncompress
   10705       638      The Fun Number System
   10287       637      Gifts in a Hexagonal Box
   10061       637      How many zero's and how many digits ?
   10919       635      Prerequisites?
   10354       634      Avoiding Your Boss
   10504       634      Hidden squares
   10259       634      Hippity Hopscotch
   10519       633      !! Really Strange !!
   10065       633      Useless Tile Packers
   10943       633      How do you add?
   10391       631      Compound Words
     533       629      Equation Solver
     339       627      SameGame Simulation
   10780       626      Again Prime? No Time.
     379       626      Hi-Q
   10849       625      Move the bishop
     815       620      Flooded!
     617       620      Nonstop Travel
   10916       619      Factstone Benchmark
     462       618      Bridge Hand Evaluator
   10689       618      Yet another Number Sequence
     538       617      Balancing Bank Accounts
     632       617      Compression (II)
     550       616      Multiplying by Rotation
   10510       612      Cactus
     547       612      DDF
   10371       611      Time Zones
     290       609      Palindroms <---> smordnilaP
     493       607      Rational Spiral
   10307       607      Killing Aliens in Borg Maze
     743       607      The MTM Machine
   10551       606      Basic Remains
     634       606      Polygon
   10693       605      Traffic Volume
   10683       604      The decadary watch
   10356       603      Rough Roads
   11040       603      Add bricks in the wall
     607       601      Scheduling Lectures
   10165       600      Stone Game
   10090       600      Marbles
   10566       595      Crossed Ladders
   10029       594      Edit Step Ladders
   10928       594      My Dear Neighbours
     603       593      Parking Lot
   10261       593      Ferry Loading
     616       591      Coconuts, Revisited
     604       591      The Boggle Game
   10446       591      The Marriage Interview :-)
   10880       590      Colin and Ryan
   10739       589      String to Palindrome
   10306       588      e-Coins
   10507       587      Waking up brain
     627       585      The Net
     672       583      Gangsters
   10092       581      The Problem with the Problem Setter
   10227       581      Forests
     548       577      Tree
     222       577      Budget Travel
     449       577      Majoring in Scales
   10593       577      Kites
   10871       577      Anti-Primes
   10337       574      Flight Planner
   10947       573      Bear with me, again..
     381       572      Making the Grade
     554       572      Caesar Cypher
   10246       571      Asterix and Obelix
   10813       569      Traditional BINGO
     221       569      Urban Elevations
   10930       566      A-Sequence
   10389       565      Subway
     347       564      Run, Run, Runaround Numbers
     705       564      Slash Maze
   10650       563      Determinate Prime
   10039       561      Railroads
     416       561      LED Test
   10493       559      Cats, with or without Hats
   10171       558      Meeting Prof. Miguel...
   10879       558      Code Refactoring
   10651       558      Pebble Solitaire
   10574       556      Counting Rectangles
     732       555      Anagrams by Stack
   10602       554      Editor Nottobad
     451       553      Poker Solitaire Evaluator
   11039       552      Building designing
   10484       551      Divisibility of Factors
   10926       550      How Many Dependencies?
   10637       549      Coprimes
   10976       546      Fractions Again?!
   10308       546      Roads in the North
   10667       544      Largest Block
     276       544      Egyptian Multiplication
   10309       541      Turn the Lights Off
     242       541      Stamps and Envelope Size
     586       540      Instant Complexity
   10528       539      Major Scales
     837       538      Light and Transparencies
   10254       537      The Priest Mathematician
     892       535      Finding words
   10536       534      Game of Euler
   10910       533      Marks Distribution
   10791       532      Minimum Sum LCM
   10856       532      Recover Factorial
   10164       530      Number Game
   10617       528      Again Palindrome
   10210       527      Romeo and Juliet !
   10497       526      Sweet Child Makes Trouble
     464       525      Sentence/Phrase Generator
   10801       523      Lift Hopping
     529       522      Addition Chains
   10908       521      Largest Square
   10047       520      The Monocycle
   10313       520      Pay the Price
   10419       519      Sum-up the Primes
   10296       519      Jogging Trails
     671       519      Spell checker
   10527       518      Persistent Numbers
   10669       517      Three powers
     410       516      Station Balance
     380       514      Call Forwarding
     517       512      Word
     487       511      Boggle Blitz
     710       510      The Game
   10918       510      Tri Tiling
     622       509      Grammar Evaluation
   10894       507      Save Hridoy
   10325       506      The Lottery
     782       504      Contour Painting
   10120       503      Gift?!
     588       502      Video Surveillance
     338       502      Long Multiplication
   10460       500      Find the Permuted String
     707       499      Robbery
     735       495      Dart-a-Mania
     312       495      Crosswords (II)
     869       494      Airline Comparison
   10774       494      Repeated Josephus
   10625       493      GNU = GNU'sNotUnix
   10278       492      Fire Station
   10060       489      A hole to catch a man
   10146       489      Dictionary
     721       489      Invitation Cards
   10717       486      Mint
   10541       484      Stripe
   10466       482      How Far?
   10212       482      The Last Non-zero Digit.
   10920       482      Spiral Tap
   10773       480      Back to Intermediate Math
     426       479      Fifth Bank of Swamp County
     296       479      Safebreaker
   11057       478      Exact Sum
   10503       478      The dominoes solitaire
     718       477      Skyscraper Floors
     658       475      It's not a Bug, it's a Feature!
     880       474      Cantor Fractions
   10925       474      Krakovia
     313       472      Intervals
   10946       472      You want what filled?
   10160       470      Servicing Stations
   10097       470      The Color Game
   10453       469      Make Palindrome
   11044       468      Searching for Nessy
     403       467      Postscript
     656       465      Optimal Programs
   10721       465      Bar Codes
   10610       464      Gopher and Hawks
   10178       464      Count the Faces.
     334       463      Identifying Concurrent Events
     647       461      Chutes and Ladders
   10865       460      Brownie Points
   10586       460      Polynomial Remains
   10401       459      Injured Queen Problem
     520       459      Append
     395       456      Board Silly
   10742       453      The New Rule in Euphomia
   10233       451      Dermuba Triangle
   11015       451      05-2 Rendezvous
     157       451      Route Finding
     150       448      Double Time
   10522       448      Height to Area
   10236       446      The Fibonacci Primes
   10543       445      Traveling Politician
   10603       444      Fill
   10289       443      A Square and Equilateral Triangles
     753       443      A Plug for UNIX
   10646       443      What is the Card?
     268       443      Double Trouble
     719       441      Glass Beads
     851       441      Maze
     172       438      Calculator Language
   10576       438      Y2K Accounting Bug
   10895       438      Matrix Transpose
   10333       438      The Tower of ASCII
     759       437      The Return of the Roman Empire
   10585       437      Center of symmetry
   10771       435      Barbarian tribes
   10816       434      Travel in Desert
     158       433      Calendar
   10428       433      The Roots
   10959       432      The Party, Part I
   10075       431      Airlines
     211       429      The Domino Effect
     175       429      Keywords
     557       429      Burger
   10158       428      War
   10677       426      Base Equality
   10830       425      A New Function
     274       424      Cat and Mouse
     393       424      The Doors
     373       424      Romulan Spelling
   10578       423      The Game of 31
   10741       423      Magic Cube
   10554       422      Calories from Fat
     415       421      Sunrise
   10912       421      Simple Minded Hashing
   10616       420      Divisible Group Sums
   10174       417      Couple-Bachelor-Spinster Numbers.
     698       416      Index
   10806       415      Dijkstra, Dijkstra.
   10203       415      Snow Clearing
   10312       413      Expression Bracketing
   10776       413      Determine The Combination
   10718       411      Bit Mask
     345       410      It's Ir-Resist-Able!
   10094       410      Place the Guards
   10410       407      Tree Reconstruction
     385       407      DNA Translation
   10045       405      Echo
   10892       404      LCM Cardinality
     702       403      The Vindictive Coach
   10911       403      Forming Quiz Teams
     387       402      A Puzzling Problem
   10827       402      Maximum sum on a torus
   10382       402      Watering Grass
   10635       402      Prince and Princess
   10440       402      Ferry Loading II
     181       402      Hearts
   10986       401      Sending email
   10821       399      Constructing BST
   11055       399      Homogeneous squares
   10720       399      Graph Construction
   10896       399      Known Plaintext Attack
   11059       398      Maximum Product
   11063       395      B2-Sequence
   10024       394      Curling up the cube
   10662       392      The Wedding
     341       391      Non-Stop Travel
   11026       391      A Grouping Problem
     736       388      Lost in Space
     810       387      A Dicey Problem
     179       387      Code Breaking
   10672       387      Marbles on a tree
     427       386      FlatLand Piano Movers
   10350       385      Liftless EME
     349       384      Transferable Voting (II)
   10575       383      Polylops
   10891       382      Game of Sum
     425       382      Enigmatic Encryption
     399       382      Another Puzzling Problem
   10958       381      How Many Solutions?
   10823       380      Of Circles and Squares
   10804       378      Gopher Strategy
   10567       377      Helping Fill Bates
   10284       376      Chessboard in FEN
     760       376      DNA Sequencing
     865       375      Substitution Cypher
   10113       375      Exchange Rates
     178       375      Shuffling Patience
     308       375      Tin Cutter
     358       372      Don't Have A Cow, Dude
   10234       372      Frequent Substrings
   10532       371      Combination! Once Again
     662       371      Fast Food
   10520       370      Determine it
   10023       368      Square root
   10250       367      The Other Two Trees
   10564       367      Paths through the Hourglass
   10387       367      Billiard
   10944       367      Nuts for nuts..
   10477       366      The Hybrid Knight
   10902       366      Pick-up Sticks
     432       366      Modern Art
   10264       365      The Most Potent Corner
     645       364      File Mapping
     452       364      Project Scheduling
   10173       363      Smallest Bounding Rectangle
     663       363      Sorting Slides
   10670       362      Work Reduction
   10149       362      Yahtzee
     390       362      Letter Sequence Analysis
   10157       360      Expressions
   10109       360      Solving Systems of Linear Equations
   10557       359      XYZZY
   10842       358      Traffic Flow
   10433       358      Automorphic Numbers
   10328       357      Coin Toss
   10862       356      Connect the Cable Wires
     897       356      Anagrammatic Primes
   10994       355      Simple Addition
   10378       355      Complex Numbers
     388       354      Galactic Import
     149       354      Forests
     758       352      The Same Game
     609       352      Metal Cutting
   10626       352      Buying Coke
     398       351      18-Wheeler Caravans (aka Semigroups)
   10248       350      The Integer All-time Champ
     613       350      Numbers That Count
   10559       350      Blocks
   10228       347      Star not a Tree?
   10111       347      Find the Winning Move
   10217       345      A Dinner with Schwarzenegger!!!
     180       345      Eeny Meeny
   10685       345      Nature
   10396       344      Vampire Numbers
     173       344      Network Wars
   10663       344      Non-Powerful Subsets
   10569       344      Number Theory
   10973       343      Triangle Counting
   10449       343      Traffic
   10688       342      The Poor Giant
   10317       342      Equating Equations
     633       342      A Chess Knight
   10232       341      Bit-wise Sequence
   10167       341      Birthday Cake
   10690       340      Expression Again
     871       337      Counting Cells in a Blob
   10416       337      Folding My T-Shirt
   10681       337      Teobaldo's Trip
   10083       337      Division
     257       333      Palinwords
   11001       333      Necklace
     405       332      Message Routing
     521       331      Gossiping
   10406       330      Cutting tabletops
     752       330      Unscrambling Images
   10978       329      Let's Play Magic!
   10744       329      The Optimal Super-Highway
   10535       329      Shooter
     745       327      Numeric Puzzles Again!
   10148       327      Advertisement
     518       326      Time
     171       326      Car Trialling
     811       326      The Fortified Forest
     430       324      Swamp County Supervisors
   10890       324      Maze
   10256       324      The Great Divide
   11054       324      Wine trading in Gergovia
   10604       323      Chemical Reaction
     169       323      Xenosemantics
   11012       322      Cosmic Cabbages
   11056       322      Formula 1
   10480       321      Sabotage
   10068       321      The Treasure Hunt
   10787       320      Modular Equations
   10439       320      Temple of Dune
   10851       319      2D Hieroglyphs decoder
   10716       319      Evil Straw Warts Live
   10058       319      Jimmi's Riddles
   10506       319      The Ouroboros problem
   10898       319      Combo Deal
     185       318      Roman Numerals
     258       317      Mirror Maze
     428       317      Swamp County Roofs
   10436       316      Cheapest way
   10505       315      Montesco vs Capuleto
     592       315      Island of Logic
     215       313      Spreadsheet Calculator
     787       313      Maximum Sub-sequence Product
   10351       313      Cutting Diamonds
   10459       312      The Tree Root
     267       312      Of(f) Course!
   10819       311      Trouble of 13-Dots
   10517       311      Wind of Change!
   10134       310      AutoFish
   10385       310      Duathlon
     453       308      Intersecting Circles
   10722       307      Super Lucky Numbers
   10316       307      Airline Hub
   10555       307      Dead Fraction
   10421       307      Critical Wave
   10666       307      The Eurocup is Here!
     695       306      Placing the Ops
   10668       306      Expanding Rods
   10634       304      Say NO to Memorization
     684       304      Integral Determinant
   10792       303      The Laurel-Hardy Story
   10257       302      Dick and Jane
     570       302      Stats
   10914       302      Abundance and Perfect Numbers
   10342       302      Always Late
   10710       302      Chinese Shuffle
   11067       301      Little Red Riding Hood
     625       300      Compression
   10331       300      The Flyover Construction
   10785       300      The Mad Numerologist
   10085       299      The most distant state
   10238       299      Throw the Dice
   11064       299      Number Theory
   10243       298      Fire! Fire!! Fire!!!
     563       298      Crimewave
   10933       297      Volleyball
     500       297      Table
   10255       296      The knight's Tour
   10606       295      Opening Doors
     561       295      Jackpot
   10917       293      Walk Through the Forest
   10855       293      Rotated square
     845       292      Gas Station Numbers
     824       292      Coast Tracker
   10746       292      Crime Wave - The Sequel
     298       291      Race Tracks
   10483       291      The Sum Equals the Product
     814       291      The Letter Carrier's Rounds
   10263       290      Railway
   10547       290      Hidden Truth in Recurrence
   10386       290      Circles in Triangle
   11069       290      A Graph Problem
   10318       289      Security Panel
   10802       288      Lex Smallest Drive
     346       288      Getting Chorded
   10609       288      Fractal
   10874       287      Segments
     519       287      Puzzle (II)
     182       287      Bonus Bonds
   10814       287      Simplifying Fractions
     433       286      Bank (Not Quite O.C.R.)
   10537       286      The Toll! Revisited
   10733       285      The Colored Cubes
   11002       285      Towards Zero
   10352       285      Count the eWords
   10086       284      Test the Rods
   10540       284      Flowers of a Beautiful Mind
   10214       283      Trees in a Wood.
   10136       283      Chocolate Chip Cookies
   11003       282      Boxes
   10909       282      Lucky Number
   10339       281      Watching Watches
   10277       280      Boastin' Red Socks
   10750       280      Beautiful Points
   10475       280      Help the Leaders
   10269       280      Adventure of Super Mario
   10698       279      Football Sort
     610       279      Street Directions
   10021       278      Cube in the labirint
   11008       278      Antimatter Ray Clearcutting
     512       278      Spreadsheet Tracking
     174       278      Strategy
   10999       278      Crabbles
     407       277      Gears on a Board
   10288       276      Coupons
   10320       276      Cow Trouble! Help Please!!
   10991       275      Region
   10218       275      Let's Dance !!!
   10655       274      Contemplation - Algebra
   10373       274      The Brick Stops Here
   11032       274      Function Overloading
     303       274      Pipe
     198       273      Peter's Calculator
   10938       273      Flea circus
     330       271      Inventory Maintenance
     669       271      Defragment
   10793       271      The Orc Attack
   10180       270      Rope Crisis in Ropeland!
     858       269      Berry Picking        
   11053       269      Flavius Josephus Reloaded
     230       269      Borrowers
   11062       269      Andy's Second Dictionary
   11029       269      Leading and Trailing
     757       268      Gone Fishing
     505       268      Moscow time
   10495       268      Conic Distance
   10977       268      Enchanted Forest
   10570       268      Meeting with Aliens
   10426       267      Knights' Nightmare
   10349       267      Antenna Placement
   10964       267      Strange Planet
     783       267      Trains
     716       266      Commedia dell' arte
   10089       266      Repackaging
     866       265      Intersecting Line Segments
   11042       265      Complex, difficult and complicated
   10759       265      Dice Throwing
   11058       264      Encoding
     653       263      Gizilch
   10118       263      Free Candies
   10549       263      Russian Dolls
   10901       262      Ferry Loading III
   10587       262      Mayor's posters
   10425       261      Mobile Destroyer
     361       261      Cops and Robbers
   11045       261      My T-shirt suits me
     411       261      Centipede Collisions
   10027       260      Language Cardinality
   11068       260      An Easy Task
   10956       259      Prime Suspect
   10529       259      Dumb Bones
   10441       259      Catenyms
   10329       258      Combinatorial Expression
     856       257      The Vigenère Cipher  
   10889       256      The Lost Gift
   10942       256      Can of Beans
   11022       256      String Factoring
     742       255      Domino Game
   10715       254      Cat
     765       254      References
   10512       253      A Day in Math-land
   10562       252      Undraw the Trees
   10992       251      The Ghost of Programmers
     838       250      Worm World
   10280       250      Old Wine Into New Bottles
   10545       249      Maximal Quadrilateral
   10560       249      Minimum Weight
     247       249      Calling Circles
   10740       248      Not the Best
     194       247      Triangle
     192       246      Synchronous Design
   10915       246      War on Weather
     366       245      Cutting Up
     599       245      The Forrest for the Trees
     629       245      Test
   10239       243      The Book-shelver's Problem
   10237       243      Bishops
   10660       243      Citizen attention offices
   10769       243      Pillars
   10444       243      Multi-peg Towers of Hanoi
     309       242      FORCAL
   10457       242      Magic Car
   10525       242      New to Bangladesh?
   10357       242      Playball !!!
     747       241      Grid Soccer
     335       241      Processing MX Records
   10343       240      Base64 Decoding
   10275       239      Guess the Number!
     852       239      Deciding victory in Go
   10927       238      Bright Lights
   11048       238      Automatic Correction of Misspellings
   10423       237      Peter Takes a Tramway
   10390       236      Bean Counting
   10274       236      Fans and Gems
   10807       236      Prim, Prim.
   10932       236      Calculator
     560       236      Magic
   10860       236      Many a Little makes a Mickle
   10577       236      Bounding box
   10887       235      Concatenation of Languages
   10937       234      Blackbeard the Pirate
     552       234      Filling the Gaps
   10731       234      Test
     618       233      Doing Windows
   10854       233      Number of Paths
     650       233      Bowl
   10225       232      Discrete Logging
   10445       232      Make Polygon
   10831       232      Gerg's Cake
   10980       232      Lowest Price in Town
   10694       232      Combinatorial Summation
   10144       231      Expression
   10247       230      Complete Tree Labeling
     835       230      Square of Primes
     685       230      Least Path Cost
   10413       229      Crazy Savages
   10563       229      Least Squares
     261       228      The Window Property
   10073       228      Constrained Exchange Sort
   11060       228      Beverages
   10072       227      Bob Laptop Woolmer and Eddie Desktop Barlow
   10777       227      God! Save me
   10592       226      Freedom Fighter
   10461       226      Difference
   10208       226      Liar or Not Liar that is the...
     559       225      Squares (II)
   10156       225      Sala-ma-Sond, A Nice Little Pond
   10843       225      Anne's game
   10748       224      Knights Roaming
   10950       224      Bad Code
   10471       224      Can't be too GREEDY
   10462       223      Is There A Second Way Left?
   10138       223      CDVII
   10028       222      Demerit Points
   10479       222      The Hendrie Sequence
   10619       222      Advanced Causal Measurements
     659       221      Reflections
   10384       221      The Wall Pushers
   10244       220      First Love !!!
   10963       220      The Swallowing Ground
   10175       220      Sphere
   10990       220      Another New Function
   10713       220      Map
     323       219      Jury Compromise
   10598       219      Find the Latitude
   10366       217      Faucet Flow
   10454       217      Trexpression
   10761       216      Broken Keyboard
   10381       214      The Rock
   10319       213      Manhattan
   11038       212      How Many O's?
   10709       212      Intersection is Not that Easy
     731       212      Numerical Summation of a Series
   10544       211      Numbering the Paths
     799       211      Safari Holiday
   10464       211      Big Big Real Numbers
   10488       211      Swimming Gopher
   10870       211      Recurrences
   10169       210      Urn-ball Probabilities !
   10900       210      So you want to be a 2n-aire?
   11027       210      Palindromic Permutation
   10262       210      Suffidromes
   10648       209      Chocolate Box
     199       209      Partial differential equations
     197       209      Cube
   10822       208      Planet of the Rock, Paper and Scissors
   10123       206      No Tipping
   10516       206      Another Counting Problem
   10511       206      Councilling
   10805       206      Cockroach Escape Networks
   10734       206      Triangle Partitioning
     595       205      A Major Problem
   10207       205      The Unreal Tournament
   10877       204      Diceoids
   10514       204      River Crossing
     708       204      Dreisam Equations
   10732       204      The Strange Research
   10858       204      Unique Factorization
   10687       203      Monitoring the Amazon
   10897       203      Travelling Distance
   10624       203      Super Number
     828       201      Deciphering Messages
     751       201      Triangle War
   10556       200      Biometrics
   10883       200      Supermean
   10345       199      Cricket/Football Goes Down
   10844       198      Bloques
   10553       198      Treasure Map
   10590       198      Boxes of Chocolates Again
   10114       197      Loansome Car Buyer
   10091       197      The Valentine's Day
   11021       197      Tribles
   10463       197      Aztec Knights
     593       197      MBone
     676       197      Horse Step Maze
     766       197      Sum of powers
   10934       196      Dropping water balloons
   10913       196      Walking on a Grid
   10594       196      Data Flow
   10448       196      Unique World
     635       195      Clock solitaire
     250       195      Pattern Matching Prelims
   10230       194      Savage Garden
     527       194      The partition of a cake
   10893       194      Creating Sudoku Puzzles
   10728       193      Help!
   10291       193      Cut the Legs
   10273       193      Eat or Not to Eat?
   10468       193      Rigid Circle Packing
   10782       193      Send More Money
   10348       192      Submarines
   10623       192      Thinking Backward
   10875       191      Big Math
   10998       191      Flipping Colors
   10011       190      Where Can You Hide?
   10076       190      The Bumpy Robot
   10866       190      Magic Bitstrings
   10542       189      Hyper-drive
   10398       189      The Golden Pentagon
     376       188      More Triangles ... THE AMBIGUOUS CASE
   11070       188      The Good Old Times
   10631       188      Normals
   10868       187      Bungee Jumping
   10725       187      Triangular Square
   10418       186      Hyper Toy Soldiers
   10122       186      Mysterious Mountain
   10481       185      The Gift Wrappers of Hollywood
   10417       185      Gift Exchanging
     893       185      Y3K Problem
   10548       185      Find the Right Changes
   10872       184      Triangles
   10649       184      Danger Point
     515       184      King
   11034       184      Ferry Loading IV
   10231       183      Matrix World
     328       182      The Finite State Text Processing Machine
   10581       182      Partitioning for fun and profit
   10367       181      Equations
   10430       180      Dear GOD, Pardon Me
   10659       180      Fitting Text into Slides
   10765       180      Doves and bombs
   11049       179      Basic wall maze
   10923       179      Seven Seas
     431       179      Trial of the Millennium
     259       179      Software Allocation
   11004       179      Changing Roadmap
     419       177      Matching Meetings
   10552       177      Genealogical Research
     288       177      Arithmetic Operations With Large Integers
   10848       177      Make Palindrome Checker
   10442       177      Basic
     566       176      Adam's Genes
     830       176      Shark
   10412       176      Big Big Trees
   10989       176      Bomb, Divide and Conquer
   10724       176      Road Construction
     229       175      Scanner
   10888       175      Warehouse
   10145       175      Lock Manager
     872       175      Ordering
     643       175      Bulk Mailing
     754       174      Treasure Hunt
   10355       174      Superman
     648       174      Stamps (II)
     680       173      Movement of Reading Head
     775       172      Hamiltonian Cycle
   10582       172      ASCII Labyrinth
   10597       172      Right Words
   10987       171      Antifloyd
   10658       171      ReArrange
   10832       170      Yoyodyne
   10882       170      Koerner's Pub
   11036       169      Eventually Periodic Sequence
   10644       167      Floor Tiles
   10824       166      Regular Polygon
     682       166      Whoever-pick-the-last-one-lose
   10697       166      Firemen barracks
     240       165      Variable Radix Huffman Encoding
   10486       165      Mountain Village
   10568       165      n Group k
   10388       164      Snap
   10372       163      Leaps Tall Buildings (in a single bound)
   11011       163      Numerical Methods! A Satire
     189       162      Pascal Program Lengths
   10817       162      Headmaster's Headache
   10707       161      2D-Nim
   10621       160      Jack and Jill
   10599       160      Robots(II)
     176       159      City Navigation
     600       159      A Duckpin Tournament
   10982       159      Troublemakers
   10652       159      Board Wrapping
     795       158      Sandorf's Cipher
   10524       158      Matrix Reloaded
   10735       158      Euler Circuit
     226       158      MIDI Preprocessing
   10692       158      Huge Mods
   10643       157      Facing Problem With Trees
   10561       157      Treblecross
     709       157      Formatting Text
     831       156      Document Validator
   10835       156      Playing with Coins
   10211       155      Divisibility Testing! Wow!
   10353       155      Circles in Hexagon :-)
   10799       155      OOPS! They did it Again...
     239       155      Tempus et mobilius. Time and motion
     734       155      The Programmer's Hex
     606       154      Keeps Going and Going and ...
   11072       154      Points
     767       154      Game
   10052       153      Inviting Politicians
     660       153      Going in circles on Alpha Centauri
     860       153      Entropy Text Analyzer
   10186       152      Euro Cup 2000
   10376       152      Snakes
   10686       152      SQF Problems
   10251       151      Min-Max Cake
     310       151      L--system
   10571       151      Products
     163       150      City Directions
   10627       150      Infinite Race
     806       150      Spatial Structures
   10053       150      Envelopes
   10811       149      Up the Ante
   10084       148      Hotter Colder
   10117       148      Nice Milk
   10850       147      The Gossipy Gossipers Gossip Gossips
   10708       147      Cheetah
   10476       147      Spam or Not Spam
   10335       147      Ray Inside a Polygon
   10838       146      The Pawn Chess
   11051       146      Dihedral groups
     844       145      Pousse
   11024       144      Circular Lock
   11047       144      The Scrooge Co Problem
   10615       143      Rooks
   10601       143      Cubes
   10825       142      Anagram and Multiplication
   10163       142      Storage Keepers
   10294       142      Arif in Dhaka (First Love Part 2)
     251       141      Nondeterministic Trellis Automata
   10124       140      Subway
   10558       140      A Brief Gerrymander
   10772       139      Rose windows
   10747       139      Maximum Subsequence
   10595       139      Knight on the Bee Board
     553       138      Simply proportion
   10665       138      Diatribe against Pigeonholes
   10818       137      Dora Trip
     841       137      Snake
     857       137      Quantiser
   11046       137      Numbers and operations
   10654       137      The Uxuhul Voting System
   10764       137      Signed-digit numbers
     667       136      Fence
     502       136      DEL command
   10172       135      The Lonesome Cargo Distributor
   10755       134      Garbage Heap
     277       133      Cabinets
   10723       133      Cyborg Genes
   10661       133      The Perspectographer
   11028       133      Sum of Product
     319       132      Pendulum
     404       132      Radar Scopes
   10798       132      Be wary of Roses
   10645       131      Menu
   10726       131      Coco Monkey
   10399       131      Optimus Prime
   10949       131      Kids in a Grid
   10754       131      Fantastic Sequence
   10736       131      Series of PI
   10985       130      Rings'n'Ropes
   10993       129      Ignoring Digits
   11031       128      Looking for a Subset
   10984       128      Double NP-hard
   10380       128      Shogi Tournament
     577       128      WIMP
   10253       128      Series-Parallel Networks
   10647       127      Optimal House Placement
   10321       127      Polygon Intersection
   10184       126      Equidistance
   10682       126      Forró Party
   10953       125      Stochastic Digit Generator
   10265       125      Toroidal Chess Queens' Problem
   10458       125      Cricket Ranking
   10501       125      Simplified Shisen-Sho
   10546       125      The Eagle's Nest
     396       124      Top Dog
   10332       124      The Absent Minded Professor
     738       124      A Logical Problem
   11020       123      Efficient Solutions
     664       123      Single-Player Games
     840       121      Deadlock Detection
   10166       121      Travel
   10618       120      Tango Tango Insurrection
     870       119      Intersecting Rectangles
     882       119      The Mailbox Manufacturers Problem
   10185       119      Phylogenetic Trees Inherited
   11019       118      Matrix Matcher
   10837       117      A Research Problem
   10704       117      Traffic!
   10447       116      Sum-up the Primes (II)
     790       116      Head Judge Headache
     874       116      2D Representations
   10292       115      The Gossiping System
   10788       115      Parenthesizing Palindromes
   11073       115      Euler's Totient Function
     744       115      Triangular Museum
     210       114      Concurrency Simulator
     899       114      Colour Circles
   10983       113      Buy one, get the rest free
   10498       113      Happiness
   11014       113      Make a Crystal
     420       112      Supercomputer Selection, The Sequel
     506       112      System Dependencies
   10886       112      Standard Deviation
     715       111      Substitution Cipher
   10270       110      Bigger Square Please...
     503       110      Parallelepiped walk
     878       110      Rotating Tetris Pieces
   10526       109      Intellectual Property
     816       109      Abbott's Revenge
     817       108      According to Bartjens
   10751       107      Chessboard
   10695       107      Find the Point
   10881       107      Piotr's Ants
   10095       106      Saving the Planet
   10794       106      The Deadly Olympic Returns!!!
   10431       105      Normal Distribution
   10362       105      Trains
   10358       105      Matrix
     722       104      Lakes
   10941       104      Words adjustment
   11035       104      Card Hands
   10839       104      The Curse of Barbosa
     317       103      Hexagon
     832       103      Financial Risk
   10434       103      Working With Specific Gravity
   10521       102      Continuously Growing Fractions
   10826       102      Hot or Cold?
     286       102      Dead Or Not -- That Is The Question
   10981       102      String Morphing
     283       102      Compress
   10087       102      The Tajmahal of ++Y2k
     848       102      Fmt
   10607       101      Siege
   10240       100      The n-Dimensional Cities
   10437       100      Playing With Fraction
     206       100      Meals on Wheels Routing System
   10395       100      Titans in Danger
   10906       100      Strange Integration
   10030       100      Computer Dialogue
   10795        99      A Different Task
     689        98      Napoleon's Grumble
   10727        98      Practice
   10538        98      Powerful Magic Squares
   10613        97      Mushroom Misery
     316        97      Stars
     764        97      Pentominos
   10904        97      Structural Equivalence
   10403        96      Escape from Tut's Tomb
   10836        96      The Maximum Term
   10133        94      Audubon's Stormy Arctic Trip
   10456        94      Intelligent Cats
   10614        94      Dreadful Vectors
     238        94      Jill's Bike
   10155        94      Green Eggs and Ham
   10206        93      Stars
   10513        93      Bangladesh Sequences
     491        93      Tile Topology
   10968        93      KuPellaKeS
   11013        93      Get Straight
     690        93      Pipeline Scheduling
     733        92      Follow the Folding Dot
     692        92      BUT We Need a Diagram
   11043        92      Fast and Easy Data Compressor
   10768        91      Planarity
     421        91      Polygonal Puzzle
   10797        91      Peaceful Sharing
     367        90      Halting Factor Replacement Systems
   10743        89      Blocks on Blocks
     842        89      Crossword Puzzles
     365        89      Welfare Reform
     829        89      Almost Balanced Trees
   10216        88      The Optimal Coffee Shop!!
     214        88      Code Generation
   10640        88      Planes around the World
   10580        87      Ransom Note
     611        87      Parallel Deadlock
   10531        87      Maze Statistics
   10775        86      Mystical Matrix
   10472        86      Fastest Vs Cheapest
   10674        86      Tangents
     802        86      Lead or Gold
   10936        86      Land surveyor's job
   11061        86      Playing War
     883        86      Overlapping Rectangles
   10841        85      Lift Hopping in the Real World
     504        85      Random number
     859        85      Chinese Checkers
   10411        84      Another Game of Tetris
   11033        84      Help my Brother
   10997        83      Medals
   11010        83      Tic-Tac-Tough
   10939        83      Ants, Aphids and a Ladybug
   10766        83      Organising the Organisation
   10767        83      Barcelona's trams
     655        82      Scrabble
   10224        82      Return of the Jedi
   10159        82      Star
   10438        81      Meta Editor
   10979        80      How Many Triangles?
   10379        80      Pit Stop Strategy
   10873        79      Splat, Inc.
   10828        79      Back to Kernighan-Ritchie
   10711        78      Stitching
     631        78      Microzoft Calendar
     269        78      Counting Patterns
   10876        78      Factory Robot
   10467        77      Parse Tree
     678        76      Schedule of Taiwan Baseball League
   10962        76      Don Giovanni's Last Dinner
   10760        76      Translation or rotation
   10470        76      Shifted Coefficient Number System
   10853        76      Pablito nailed a nail
   10869        76      Brownie Points II
   10455        75      Gray Code
     873        75      Loan (II)
   10796        75      Right Hand Rule
   10729        74      Treequivalence
     898        74      Hole Cutter
   10899        74      Billiard again
   10770        73      Sokoban
     826        73      Symbolic Numerical System
   10829        73      L-Gap Substrings
   10786        72      Qualify for the Champions League
   11007        72      Mini Cube
     818        72      Cutting Chains
     266        70      Stamping Out Stamps
   10429        70      Mohr's Circle
     853        70      DVD Subtitles        
   10951        69      Polynomial GCD
   10834        69      The Story of Two Coins
   10135        69      Herding Frosh
   10975        69      Dueue's Quiz
   10322        69      The Four in One Stadium
   10632        69      Pyramid
   10960        69      The Party, Part II
     578        69      Polygon Puzzler
   10712        68      Count the Numbers
   10272        68      DDR King
     564        68      Gaston
   11052        67      Economic phone calls
     728        67      Scatter Point Plot
   10995        67      Educational Journey
   11025        66      Mr. And Mrs. Hamilton
   10859        66      Placing Lampposts
   10314        66      Three Pigs
   10753        66      Exponential Function
   10965        66      Khepel's Problem
   10204        66      Adventures in Moving - Part V
     804        66      Petri Net Simulation
   10629        66      Truckin'
   10572        66      Black & White
   10779        66      Collectors Problem
   10809        65      Great Circle
   10752        65      Distant Jumping
   10121        65      Legendary Pokemon
     581        65      Word Search Wonder
     285        65      Crosswords
   10638        65      The Trip II
   10641        64      Barisal Stadium
     265        63      Dining Diplomats
     881        62      Points, Polygons and Containers
   10588        62      Queuing at the doctors
   10612        62      Paper Folding
   10833        60      Lunar Forest
   10907        60      Art Gallery
     819        60      Gifts Large and Small
   10671        60      Grid Speed
   10749        60      Automobile Travelling
     207        59      PGA Tour Prize Money
     246        59      10-20-30
     370        58      Bingo
     868        58      Numerical Maze
   10119        58      Farewell, my friend
   10478        57      The Falling Pillars
     879        57      Circuit Nets
   11071        56      Permutation Representation
     827        56      Buddy Memory Allocator
     234        56      Switching Channels
   11016        55      Square Counting
     262        55      Transferable Voting
   11018        55      Mars Buggy
     473        54      Raucous Rockers
   11065        54      A Gentlemen's Agreement
   10676        53      Grid Points
   10402        53      Triangle Covering
   10867        52      Cutting a Polygon
   10108        52      The Mosquito Killer Mosquitos
   10847        52      Basic Tautologies
     342        52      HTML Syntax Checking
     243        52      Theseus and the Minotaur (II)
   10565        52      Matrix
   10885        52      Martin the Gardener
   10143        50      Loan
     549        50      Evaluating an Equations Board
     823        50      Stopper Stumper
     683        49      Character Decoding
     809        49      Bullet Hole
     237        49      Monitoring Wheelchair Patients
     359        49      Sex Assignments And Breeding Experiments
     569        48      Horse Shoe Scoring
   10103        48      Karpovich blocks
     877        48      Offset Polygons
   10808        47      Rational Resistors
   10064        47      Travelling in another Dimension
   10996        47      Go
   10435        46      Compare Directories
   10969        46      Sweet Dream
     777        46      Codebreakers
   10266        46      Surveying
   10605        46      Mines For Diamonds
   10241        46      Semi-triangular and also Square
   11017        45      A Greener World
   10863        45      Shovelling Snow
   10864        45      The Predator
   10884        45      Persephone
   11030        45      Predator II
     304        44      Department
   10584        43      Text Formalization
     225        43      Golygons
     822        43      Queue and A
     769        43      Magic of David Copperfield
     282        43      Rename
     203        42      Running Lights Visibility Calculator
     205        42      Getting There
   10153        41      New Horizons
   10967        41      The Great Escape
   10031        41      Saskatchewan
     329        41      PostScript Emulation
     289        41      A Very Nasty Text Formatter
     475        40      Wild Thing
   10675        40      Revenge of Faucet Flow
   10414        40      Denki Blocks
     546        40      Image Recognizer
   10691        40      Subway
   10758        39      Journey
     284        38      Logic
   10628        38      Quadrills
     813        36      Robot
     293        36      Bits
   10952        35      Pattern Transformations
     730        35      Morse Code Generation
     204        35      Robot Crash
     244        34      Train Time
   10756        34      HardNumbers
   11006        33      Wheel Good
   10737        32      The Difference Engine
   11066        31      Aragorn
   10961        30      Chasing After Don Giovanni
     807        30      Towers of Powers
     746        29      Polygon Visibility
     891        29      Syntrax
   11050        29      Construct the wall maze
     666        28      Rating
   10151        27      Spaghetti
     605        27      The Rotating Disk
     890        27      Maze (II)
   10955        26      Playfair Cipher
     223        25      Classifying Lots in a Subdivision
     322        25      Ships
   10636        25      Stretching Geometry
     279        25      Spin
   10657        25      Prince Frog II
     687        24      Lattice Practices
   10988        24      From G to H and back
   10846        24      Reading time from a clock
     720        23      Hares and Foxes
   10485        23      Painting with CSE
     862        23      Origami
   10972        23      RevolC FaeLoN
     249        22      Bang the Drum Slowly
   10096        22      The Richest Man of the Universe
     295        21      Fatman
     723        21      Comment Removal
   11023        21      Multisets and Sequences
   11009        21      Geometry Once Again
     797        20      Two Way Traffic
     691        20      Triangle Partition
     798        19      Tile Puzzle
     885        19      Telephone Directory Alphabetization
     794        19      Straightest Paths
     889        18      Islands
     864        18      Scheme Pretty-Printing
   10046        18      Fold-up Patterns
     786        18      Working with Relations
   11041        18      Quarter-Finals with Brazil!? No!!!
     849        18      Radar Tracking
   11037        17      Point of View in Flatland
     233        17      Package Pricing
   10861        17      Security by Ambiguity
     887        17      Revolutionary Calendar
   10639        16      Square Puzzle
     646        16      The Gourmet Club
     854        16      Worse Code
     281        16      Rubik's Cube
     888        14      Donkey
     749        14      Machine Repair Simulation
     212        14      Use of Hospital Facilities
     886        14      Named Extension Dialing
     693        14      Digital Racing Circuit
   10762        14      Treasure Castle
   10857        14      Easter Eggs
     235        13      Typesetting
   10492        13      Optimal Mastermind Strategy
     463        13      Polynomial Factorization
     241        12      Sail Race
   10778        11      Mathemagicland
     248        11      Cutting Corners
   10383        10      Queen vs Rook
     801        10      Flight Planning
     292         9      Presentation Error
   10630         9      Millennium Ceremony
     217         9      Radio Direction Finder
     525         8      Milk Bottle Data
     894         6      Juggling Trams
     354         5      Crazy Calculator
   10974         4      The Ridiculous Game
   10971         4      Building Construction
   10059         3      The Hazard of CSE Department!
   10757         2      Interpreting SQL
   10840         1      Multi-stage Compressor
   10966         1      3KP-BASH Project
     896         1      Board Game
     236         1      VTAS - Vessel Traffic Advisory Service
   10781         0      Global Positioning System
   10845         0      The crusades
     863         0      Process Scheduling
     219         0      Department of Redundancy Department
     224         0      Kissin' Cousins
     228         0      Resource Allocation
     252         0      Trucking
     287         0      Text Comparsion
     351         0      ``Cheapest'' Scores
     360         0      Don't Get Hives From This One!
     363         0      Approximate Matches
     364         0      Constitutional Computing
     368         0      Indexing Web Pages
     372         0      WhatFix Notation
     456         0      Robotic Stacker
     461         0      The Reservation Maker
     470         0      Nasty Virus
     472         0      Simultaneous Equations
     479         0      Irrigation Flow Rates
     480         0      Tempus Fugit
     508         0      Morse Mismatches
     509         0      RAID!
     510         0      Optimal Routing
     511         0      Do You Know the Way to San Jose?
     513         0      Window Frames
     522         0      Schedule Problem
     528         0      The Problem of Train Setout
     582         0      Randomly Wired Neural Nets
     596         0      The Incredible Hull
     597         0      Last Name First, Please
     649         0      You Who?
     675         0      Convex Hull of the Polygon
     717         0      Calculating Expressions on Turing Machine
     724         0      Reverse
     761         0      Transform those strings
     768         0      Crossword
     770         0      Puncher
     771         0      Flying Stars
     772         0      Divide et unita
     773         0      The JustaPox Language
     774         0      Driving in City Squares
     778         0      Recording a tape
     779         0      Wily Hacker's Problem
     780         0      Sentence Generator
     781         0      Optimisation
     788         0      One Day Tours
     789         0      Indexing
     791         0      Term Reductions
     792         0      Program Modules
     800         0      Crystal Clear
     803         0      Page Selection by Keyword Matching
     805         0      Polygon Intersections
     867         0      Storing Images in a Sequence
     875         0      Monopoly
     876         0      Balanced Expressions