Logic Puzzles
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- xkcd Forum Rules - Updated Nov. 13th 2012
by hermaj » Fri Nov 07, 2008 4:46 am UTC - 1 Replies
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Fri Nov 07, 2008 4:47 am UTC
- xkcd Forum Rules - Updated Nov. 13th 2012
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- Rules - Update Aug 23
by TheTankengine » Wed Jun 20, 2007 6:38 pm UTC - 0 Replies
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Wed Jun 20, 2007 6:38 pm UTC
- Rules - Update Aug 23
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- Three gods - True, False and Random
1, 2by Torn Apart By Dingos » Wed Sep 20, 2006 9:50 am UTC - 65 Replies
- 25941 Views
- Last post by nishank
Fri May 11, 2012 11:46 pm UTC
- Three gods - True, False and Random
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- The hardest logic puzzle ever - even tougher
by NNikolay » Fri May 11, 2012 3:16 am UTC - 4 Replies
- 3451 Views
- Last post by jestingrabbit
Fri May 11, 2012 4:09 pm UTC
- The hardest logic puzzle ever - even tougher
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- The perfect Chess AI engine
1, 2, 3by warriorness » Sun Mar 04, 2007 2:22 am UTC - 88 Replies
- 22496 Views
- Last post by tomtom2357
Wed May 09, 2012 2:49 pm UTC
- The perfect Chess AI engine
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- Puzzle
by Callisto » Thu May 03, 2012 2:24 pm UTC - 7 Replies
- 2106 Views
- Last post by BlueSoxSWJ
Sat May 05, 2012 11:39 pm UTC
- Puzzle
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- Wandering jinn
by Quizatzhaderac » Tue May 01, 2012 9:25 pm UTC - 2 Replies
- 2260 Views
- Last post by mfb
Fri May 04, 2012 3:08 pm UTC
- Wandering jinn
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- x^x^x^x^x=5?
by skeptical scientist » Mon Oct 31, 2011 12:49 am UTC
- 30 Replies
- 8978 Views
- Last post by battlesnake
Fri May 04, 2012 1:40 pm UTC
- x^x^x^x^x=5?
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- A hundred tourists
by wraith » Tue Jul 12, 2011 1:05 pm UTC - 28 Replies
- 7234 Views
- Last post by krogoth
Mon Apr 30, 2012 8:53 am UTC
- A hundred tourists
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- another number sequence
by enfolder » Fri Oct 13, 2006 10:25 pm UTC - 26 Replies
- 8470 Views
- Last post by ARP
Thu Apr 26, 2012 7:26 pm UTC
- another number sequence
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- Find the next number.
by jjane » Fri Oct 17, 2008 6:45 pm UTC - 18 Replies
- 3078 Views
- Last post by ARP
Thu Apr 26, 2012 6:52 pm UTC
- Find the next number.
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- Mental exercises to do while running
by Raph » Sun Apr 15, 2012 7:08 pm UTC - 4 Replies
- 3703 Views
- Last post by BlueSoxSWJ
Sun Apr 22, 2012 4:16 am UTC
- Mental exercises to do while running
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- Counting quarters blindfolded
by Danny Uncanny7 » Tue Apr 17, 2012 9:48 pm UTC - 2 Replies
- 1744 Views
- Last post by jestingrabbit
Wed Apr 18, 2012 2:22 am UTC
- Counting quarters blindfolded
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- 17 Offices
by sputnik15 » Mon Apr 09, 2012 4:54 pm UTC - 19 Replies
- 2776 Views
- Last post by mfb
Tue Apr 17, 2012 10:37 am UTC
- 17 Offices
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- Umbra Ciphers
by thezeus18 » Sat Apr 14, 2012 9:02 pm UTC - 0 Replies
- 1293 Views
- Last post by thezeus18
Sat Apr 14, 2012 9:02 pm UTC
- Umbra Ciphers
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- The Logic of Probability
by Halleck » Fri Nov 18, 2011 7:36 pm UTC - 22 Replies
- 5150 Views
- Last post by jestingrabbit
Wed Apr 11, 2012 9:44 am UTC
- The Logic of Probability
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- Problem with Carpooling
by MDragon » Sun Aug 23, 2009 6:10 am UTC - 26 Replies
- 5769 Views
- Last post by WarDaft
Wed Apr 11, 2012 3:37 am UTC
- Problem with Carpooling
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- Find the next number in the sequence...
by wattie » Mon Apr 09, 2012 5:45 pm UTC - 3 Replies
- 1232 Views
- Last post by jestingrabbit
Tue Apr 10, 2012 4:53 am UTC
- Find the next number in the sequence...
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- Can you solve it?
by Jan Mattys » Tue Apr 03, 2012 2:17 pm UTC - 4 Replies
- 1883 Views
- Last post by Snark
Thu Apr 05, 2012 8:20 pm UTC
- Can you solve it?
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- Cipher Problem
by Scallel » Mon Jan 02, 2012 2:39 am UTC - 7 Replies
- 2398 Views
- Last post by Jokertyf
Mon Apr 02, 2012 1:58 am UTC
- Cipher Problem
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- Locker Problem
by backoffbro » Fri Mar 30, 2012 1:08 pm UTC - 1 Replies
- 1162 Views
- Last post by jestingrabbit
Fri Mar 30, 2012 5:22 pm UTC
- Locker Problem
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- The Disgruntled Alien Visitor
by eligitine » Wed Mar 28, 2012 3:33 pm UTC - 9 Replies
- 3129 Views
- Last post by mward
Fri Mar 30, 2012 4:28 pm UTC
- The Disgruntled Alien Visitor
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- Locker Problem Solution
by backoffbro » Fri Mar 30, 2012 1:15 pm UTC - 0 Replies
- 980 Views
- Last post by backoffbro
Fri Mar 30, 2012 1:15 pm UTC
- Locker Problem Solution
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- Magic: the Unsolved Problems in Mathematics
by Elvish Pillager » Sat Mar 17, 2012 5:41 pm UTC - 18 Replies
- 3617 Views
- Last post by Dopefish
Thu Mar 29, 2012 10:49 pm UTC
- Magic: the Unsolved Problems in Mathematics
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- What is the secret of this poem?
by ducksan » Mon Mar 19, 2012 12:48 am UTC - 2 Replies
- 1543 Views
- Last post by ducksan
Mon Mar 19, 2012 2:56 pm UTC
- What is the secret of this poem?
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- 3 heroes with hats vs a villain
1, 2by rigwarl » Wed Nov 16, 2011 10:28 pm UTC - 54 Replies
- 10540 Views
- Last post by blakpete
Mon Mar 19, 2012 1:06 am UTC
- 3 heroes with hats vs a villain
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- The solution is a two-digit number, part two
by HonoreDB » Fri Mar 09, 2012 12:52 am UTC - 4 Replies
- 1871 Views
- Last post by HonoreDB
Sat Mar 10, 2012 9:28 pm UTC
- The solution is a two-digit number, part two
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- Elven Village Mayor
by HonoreDB » Wed Feb 15, 2012 7:35 pm UTC - 22 Replies
- 3865 Views
- Last post by soraos21
Sat Mar 10, 2012 11:24 am UTC
- Elven Village Mayor
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- Cipher Challenge
by jianmin » Sat Feb 25, 2012 9:45 pm UTC - 6 Replies
- 1951 Views
- Last post by jianmin
Mon Feb 27, 2012 6:55 pm UTC
- Cipher Challenge
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- The tournament problem
by tomtom2357 » Fri Feb 24, 2012 10:11 am UTC - 13 Replies
- 2324 Views
- Last post by douglasm
Sun Feb 26, 2012 1:48 am UTC
- The tournament problem
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- Can you break my code?
by Shademourne » Fri Feb 17, 2012 9:14 pm UTC - 2 Replies
- 1621 Views
- Last post by Shademourne
Sat Feb 18, 2012 2:04 am UTC
- Can you break my code?
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- Chain of Circles
by skeptical scientist » Wed May 25, 2011 6:24 pm UTC - 15 Replies
- 4068 Views
- Last post by Lenoxus
Fri Feb 17, 2012 7:46 pm UTC
- Chain of Circles
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- Looking for help with real life logic puzzle
by lucasdmiller » Thu Feb 16, 2012 6:56 pm UTC - 4 Replies
- 1660 Views
- Last post by mike-l
Fri Feb 17, 2012 6:45 pm UTC
- Looking for help with real life logic puzzle
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- No Words Allowed
by RubbishyUsername » Mon Dec 19, 2011 2:51 pm UTC - 10 Replies
- 3254 Views
- Last post by aerion111
Fri Feb 10, 2012 4:30 am UTC
- No Words Allowed
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- Making Waves
by Qaanol » Sun Feb 05, 2012 4:31 am UTC
- 29 Replies
- 4051 Views
- Last post by WarDaft
Wed Feb 08, 2012 2:54 am UTC
- Making Waves
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- Overhanging dominoes
by legend » Fri Feb 03, 2012 9:35 pm UTC - 9 Replies
- 2170 Views
- Last post by WarDaft
Sun Feb 05, 2012 8:52 am UTC
- Overhanging dominoes
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- Prisoners in Limbo
by Ermes Marana » Thu Jan 26, 2012 8:57 am UTC - 19 Replies
- 4210 Views
- Last post by Yakk
Tue Jan 31, 2012 2:41 pm UTC
- Prisoners in Limbo
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- Looking for hard and rare logic puzzles
1, 2by Aro » Tue Jul 26, 2011 11:37 am UTC - 60 Replies
- 11112 Views
- Last post by mfb
Sun Jan 29, 2012 3:24 pm UTC
- Looking for hard and rare logic puzzles
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- Numbering the insides of a Rubiks Cube uniquely
by ThemePark » Sun Jan 15, 2012 8:31 pm UTC - 23 Replies
- 3144 Views
- Last post by ThemePark
Sun Jan 29, 2012 1:11 am UTC
- Numbering the insides of a Rubiks Cube uniquely
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- The motorbike and the car.
by BigNose » Thu Dec 08, 2011 11:02 am UTC
- 24 Replies
- 4244 Views
- Last post by WarDaft
Wed Jan 25, 2012 9:39 pm UTC
- The motorbike and the car.
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- Pirate Democracy
1, 2by MrBawn » Sun Oct 08, 2006 11:59 pm UTC - 52 Replies
- 10425 Views
- Last post by WarDaft
Wed Jan 25, 2012 6:03 pm UTC
- Pirate Democracy
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- Some tricky logic puzzles.
1, 2by tomtom2357 » Mon Dec 26, 2011 10:48 am UTC - 41 Replies
- 5913 Views
- Last post by tomtom2357
Wed Jan 25, 2012 1:53 pm UTC
- Some tricky logic puzzles.
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- octagon treasure hunt
by zukenft » Tue Jan 03, 2012 11:20 am UTC - 10 Replies
- 2703 Views
- Last post by jaap
Tue Jan 24, 2012 3:37 pm UTC
- octagon treasure hunt
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- The Mysterious Coin
by gaga654 » Wed Jun 08, 2011 12:39 am UTC - 33 Replies
- 6106 Views
- Last post by jestingrabbit
Tue Jan 24, 2012 11:11 am UTC
- The Mysterious Coin
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- Phonopath
by JoeyJo0 » Sat Jan 07, 2012 3:51 am UTC - 2 Replies
- 1409 Views
- Last post by tomtom2357
Tue Jan 24, 2012 11:09 am UTC
- Phonopath
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- Longest english contraction
by balr » Fri Jun 03, 2011 9:47 am UTC - 20 Replies
- 6194 Views
- Last post by tomtom2357
Tue Jan 24, 2012 11:08 am UTC
- Longest english contraction
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- Unfair auction
1, 2by Tass » Fri Mar 18, 2011 7:49 am UTC - 55 Replies
- 7814 Views
- Last post by tomtom2357
Tue Jan 24, 2012 10:54 am UTC
- Unfair auction
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- 10 triangles with 10 matchsticks
by charonme » Sat Dec 31, 2011 12:31 pm UTC - 12 Replies
- 2550 Views
- Last post by tomtom2357
Tue Jan 24, 2012 10:31 am UTC
- 10 triangles with 10 matchsticks
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- 4 meeting bugs
by Caesar » Thu Nov 11, 2010 1:44 pm UTC - 16 Replies
- 3875 Views
- Last post by tomtom2357
Tue Jan 24, 2012 8:05 am UTC
- 4 meeting bugs
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- light bulb dropping problem
by tomtom2357 » Mon Jan 23, 2012 8:31 am UTC - 2 Replies
- 1048 Views
- Last post by tomtom2357
Mon Jan 23, 2012 8:36 am UTC
- light bulb dropping problem
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- Light Bulb Puzzle
by DavidArmstrong488 » Mon Jan 23, 2012 6:59 am UTC - 1 Replies
- 775 Views
- Last post by jestingrabbit
Mon Jan 23, 2012 7:26 am UTC
- Light Bulb Puzzle
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