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
- 311398 Views
- Last post by hermaj
Fri Nov 07, 2008 4:47 am UTC
- xkcd Forum Rules - Updated Nov. 13th 2012
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- Logic Puzzles Rules - Update 2013
by TheTankengine » Wed Jun 20, 2007 6:38 pm UTC - 0 Replies
- 14770 Views
- Last post by TheTankengine
Wed Jun 20, 2007 6:38 pm UTC
- Logic Puzzles Rules - Update 2013
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- After You Post A Puzzle, Don't Edit it!
by jestingrabbit » Wed Nov 21, 2012 3:57 pm UTC - 2 Replies
- 4995 Views
- Last post by jestingrabbit
Wed Nov 21, 2012 6:26 pm UTC
- After You Post A Puzzle, Don't Edit it!
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- New spoiler policy.
by jestingrabbit » Mon Oct 01, 2007 8:32 pm UTC - 35 Replies
- 39145 Views
- Last post by MasterOfAll
Thu Nov 01, 2012 3:45 pm UTC
- New spoiler policy.
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- Mother of All Puzzles
1, 2, 3by GeoffreyY » Fri Mar 08, 2013 12:14 pm UTC - 89 Replies
- 21681 Views
- Last post by runawaygoat
Wed Mar 12, 2014 2:28 am UTC
- Mother of All Puzzles
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- Number substitution puzzle - multiplication
by Demki » Sat Mar 01, 2014 1:41 pm UTC
- 18 Replies
- 833 Views
- Last post by Demki
Tue Mar 11, 2014 1:47 pm UTC
- Number substitution puzzle - multiplication
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- The philosopher, the most intelligent man and the fish
1, 2by Rhombic » Sat Jan 18, 2014 9:31 pm UTC - 44 Replies
- 3566 Views
- Last post by BigNose
Mon Mar 10, 2014 2:17 pm UTC
- The philosopher, the most intelligent man and the fish
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- Find the final answer
by lamora92 » Thu Feb 27, 2014 6:40 am UTC - 9 Replies
- 775 Views
- Last post by thefargo
Fri Mar 07, 2014 8:32 pm UTC
- Find the final answer
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- The Hardest Logic Puzzle Ever
by KnightExemplar » Mon Mar 03, 2014 3:50 am UTC - 3 Replies
- 438 Views
- Last post by Qaanol
Tue Mar 04, 2014 10:06 pm UTC
- The Hardest Logic Puzzle Ever
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- the poisoned wine
by phillip1882 » Wed Jan 29, 2014 3:21 am UTC - 27 Replies
- 1864 Views
- Last post by checkmate
Wed Feb 26, 2014 11:40 pm UTC
- the poisoned wine
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- The Waiter
by Thantsking » Mon Feb 24, 2014 4:00 am UTC - 2 Replies
- 443 Views
- Last post by jestingrabbit
Tue Feb 25, 2014 7:13 am UTC
- The Waiter
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- Find a set of numbers containing mine
by wraith » Fri Dec 06, 2013 12:37 pm UTC - 32 Replies
- 3524 Views
- Last post by wraith
Wed Feb 19, 2014 1:49 pm UTC
- Find a set of numbers containing mine
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- Interpret this sequence 1893 900 5 1040 ...
by xkcud » Mon Oct 10, 2011 5:46 am UTC - 12 Replies
- 3623 Views
- Last post by PsiSquared
Tue Feb 18, 2014 10:09 am UTC
- Interpret this sequence 1893 900 5 1040 ...
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- Crack the code
by maxpotier » Tue Dec 03, 2013 9:30 pm UTC - 2 Replies
- 1252 Views
- Last post by Frankz
Fri Feb 14, 2014 2:56 am UTC
- Crack the code
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- My write-up of the "Blue Eyes" solution (SPOILER A
1 ... 27, 28, 29by xkcd » Sat Apr 08, 2006 8:26 am UTC - 1152 Replies
- 229612 Views
- Last post by Lunch Meat
Tue Feb 11, 2014 8:37 pm UTC
- My write-up of the "Blue Eyes" solution (SPOILER A
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- Rotating Pieces: Solve My Game!
by krazykate » Tue Feb 04, 2014 3:46 pm UTC
- 12 Replies
- 925 Views
- Last post by PeteP
Mon Feb 10, 2014 5:29 pm UTC
- Rotating Pieces: Solve My Game!
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- Prisoners disguised as guards
by wraith » Mon Oct 28, 2013 1:59 pm UTC - 29 Replies
- 3210 Views
- Last post by operator[]
Fri Jan 31, 2014 9:55 pm UTC
- Prisoners disguised as guards
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- Coded Image
by Rhombic » Mon Jan 13, 2014 9:02 pm UTC
- 4 Replies
- 914 Views
- Last post by Rhombic
Thu Jan 23, 2014 7:59 pm UTC
- Coded Image
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- The Coin Codes
by Rhombic » Sun Jan 05, 2014 10:06 pm UTC - 3 Replies
- 1046 Views
- Last post by jestingrabbit
Mon Jan 06, 2014 2:02 pm UTC
- The Coin Codes
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- Sum of three cards game
by wraith » Fri Dec 20, 2013 12:59 pm UTC - 6 Replies
- 2226 Views
- Last post by CharlieP
Thu Jan 02, 2014 11:44 am UTC
- Sum of three cards game
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- Three princesses
1 ... 9, 10, 11by Fleshpiston » Fri Jul 14, 2006 8:25 am UTC - 408 Replies
- 129446 Views
- Last post by firefly
Wed Dec 18, 2013 8:16 am UTC
- Three princesses
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- Flipping 50 consecutive cards
by wraith » Mon Dec 09, 2013 12:05 pm UTC - 15 Replies
- 2146 Views
- Last post by jedelmania
Thu Dec 12, 2013 10:29 am UTC
- Flipping 50 consecutive cards
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- Misplaced Christmas presents
by wraith » Wed Nov 27, 2013 12:50 pm UTC - 11 Replies
- 2537 Views
- Last post by tomtom2357
Sun Dec 01, 2013 12:42 pm UTC
- Misplaced Christmas presents
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- Partitioning the complete graph
by tomtom2357 » Wed Nov 27, 2013 10:56 am UTC - 0 Replies
- 833 Views
- Last post by tomtom2357
Wed Nov 27, 2013 10:56 am UTC
- Partitioning the complete graph
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- Problem of the Universe
1, 2by tomtom2357 » Tue Jul 16, 2013 4:46 am UTC - 57 Replies
- 10215 Views
- Last post by tomtom2357
Wed Nov 20, 2013 1:47 am UTC
- Problem of the Universe
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- prisoner puzzle
by phillip1882 » Sat Nov 16, 2013 2:26 am UTC - 4 Replies
- 1750 Views
- Last post by jestingrabbit
Tue Nov 19, 2013 2:55 am UTC
- prisoner puzzle
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- Sequence of numbers
by Volcano99 » Mon Nov 18, 2013 8:38 am UTC - 2 Replies
- 914 Views
- Last post by jaap
Mon Nov 18, 2013 9:54 am UTC
- Sequence of numbers
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- Alien abduction
by ejsantos » Wed May 22, 2013 12:59 pm UTC - 15 Replies
- 5137 Views
- Last post by Adam H
Fri Nov 15, 2013 4:21 pm UTC
- Alien abduction
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- The enigma of @YOUGAKUDAN_00
by mabeuf » Wed Oct 02, 2013 4:04 pm UTC - 31 Replies
- 8061 Views
- Last post by shoeboxer
Wed Nov 13, 2013 7:32 am UTC
- The enigma of @YOUGAKUDAN_00
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- Losing Strategy
by Wnderer » Wed Nov 06, 2013 9:03 pm UTC - 6 Replies
- 1537 Views
- Last post by Adam H
Thu Nov 07, 2013 3:15 pm UTC
- Losing Strategy
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- One of those IR book puzzle games
by traltixx » Tue Oct 29, 2013 3:54 am UTC - 5 Replies
- 1475 Views
- Last post by dudiobugtron
Wed Nov 06, 2013 8:39 pm UTC
- One of those IR book puzzle games
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- 3 Cryptic Riddles (I don't have the answers) .......
by Moonbeam » Wed Sep 07, 2011 5:52 pm UTC
- 31 Replies
- 8570 Views
- Last post by jestingrabbit
Wed Nov 06, 2013 7:22 pm UTC
- 3 Cryptic Riddles (I don't have the answers) .......
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- Secret Santa
1, 2by Goldstein » Fri Nov 26, 2010 3:18 pm UTC - 45 Replies
- 10605 Views
- Last post by pandasbox
Tue Nov 05, 2013 12:59 pm UTC
- Secret Santa
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- Crypto challenge
by theme » Sat Nov 02, 2013 5:26 pm UTC - 2 Replies
- 1086 Views
- Last post by theme
Sun Nov 03, 2013 7:58 am UTC
- Crypto challenge
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- Parking on a hill
1, 2by RivuletBlue » Wed Oct 16, 2013 10:41 pm UTC - 40 Replies
- 3975 Views
- Last post by dudiobugtron
Tue Oct 29, 2013 10:19 pm UTC
- Parking on a hill
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- Two cards - one ace. Advanced 7 grade problem
by wraith » Thu Oct 10, 2013 1:38 pm UTC - 21 Replies
- 2655 Views
- Last post by wraith
Fri Oct 25, 2013 12:46 pm UTC
- Two cards - one ace. Advanced 7 grade problem
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- My code want to be cracked.
by Chaest » Wed Oct 16, 2013 9:41 am UTC - 0 Replies
- 1165 Views
- Last post by Chaest
Wed Oct 16, 2013 9:41 am UTC
- My code want to be cracked.
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- Sum and Product Game
by tomtom2357 » Wed Sep 18, 2013 3:06 pm UTC - 37 Replies
- 5897 Views
- Last post by tomtom2357
Fri Oct 11, 2013 4:29 pm UTC
- Sum and Product Game
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- Non-transitive dice
by tomtom2357 » Sun Sep 29, 2013 3:39 pm UTC - 8 Replies
- 2452 Views
- Last post by tomtom2357
Thu Oct 10, 2013 12:26 am UTC
- Non-transitive dice
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- Pennies in Boxes
1, 2by undecim » Thu Sep 06, 2012 10:06 pm UTC - 71 Replies
- 25655 Views
- Last post by firesoul31
Thu Sep 26, 2013 11:37 pm UTC
- Pennies in Boxes
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- Can you crack my code? Version two
by Jumper_0 » Sun Apr 21, 2013 5:23 am UTC - 10 Replies
- 4363 Views
- Last post by snowyowl
Mon Sep 23, 2013 1:18 pm UTC
- Can you crack my code? Version two
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- Can you crack this?
by Unkn0wnn » Mon Jul 29, 2013 4:30 pm UTC - 12 Replies
- 4422 Views
- Last post by Sprocklem
Sat Sep 21, 2013 11:11 pm UTC
- Can you crack this?
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- Towers, Courtyard, and trees
by Trebla » Wed Dec 07, 2011 3:06 pm UTC - 36 Replies
- 6206 Views
- Last post by Gwydion
Wed Sep 18, 2013 5:10 am UTC
- Towers, Courtyard, and trees
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- can you read this secret message?
by Jay'98 » Tue Sep 10, 2013 4:51 am UTC - 0 Replies
- 1320 Views
- Last post by Jay'98
Tue Sep 10, 2013 4:51 am UTC
- can you read this secret message?
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- Logic Puzzles on Sporcle
by 314man » Mon Aug 19, 2013 4:30 am UTC - 6 Replies
- 2582 Views
- Last post by elasto
Tue Sep 03, 2013 6:45 am UTC
- Logic Puzzles on Sporcle
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- Play Your Cards Right
by Moonbeam » Mon Aug 05, 2013 10:56 pm UTC - 26 Replies
- 5578 Views
- Last post by Moonbeam
Tue Aug 27, 2013 8:57 pm UTC
- Play Your Cards Right
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- A board game based on ´symmetry´
by thomasbarefootcoders » Wed Aug 07, 2013 10:07 pm UTC - 15 Replies
- 5759 Views
- Last post by snowyowl
Sat Aug 24, 2013 3:52 pm UTC
- A board game based on ´symmetry´
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- What Do These Numbers Have in Common?
by Carlington » Mon Feb 22, 2010 10:19 am UTC - 23 Replies
- 8487 Views
- Last post by JudyLPotts
Sat Aug 03, 2013 8:21 pm UTC
- What Do These Numbers Have in Common?
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- Sandra & Woo crypto challenge
by sol_hsa » Mon Jul 29, 2013 5:20 am UTC - 4 Replies
- 2570 Views
- Last post by Lopsidation
Tue Jul 30, 2013 5:29 pm UTC
- Sandra & Woo crypto challenge
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