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
- 284242 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
- 14162 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
- 4260 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
- 37969 Views
- Last post by MasterOfAll
Thu Nov 01, 2012 3:45 pm UTC
- New spoiler policy.
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- Find a set of numbers containing mine
by wraith » Fri Dec 06, 2013 12:37 pm UTC - 19 Replies
- 1113 Views
- Last post by Klear
Tue Dec 10, 2013 10:19 am UTC
- Find a set of numbers containing mine
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- Flipping 50 consecutive cards
by wraith » Mon Dec 09, 2013 12:05 pm UTC - 4 Replies
- 149 Views
- Last post by jedelmania
Mon Dec 09, 2013 3:14 pm UTC
- Flipping 50 consecutive cards
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- Crack the code
by maxpotier » Tue Dec 03, 2013 9:30 pm UTC - 1 Replies
- 404 Views
- Last post by maxx
Sat Dec 07, 2013 1:45 pm UTC
- Crack the code
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- Misplaced Christmas presents
by wraith » Wed Nov 27, 2013 12:50 pm UTC - 11 Replies
- 1627 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
- 230 Views
- Last post by tomtom2357
Wed Nov 27, 2013 10:56 am UTC
- Partitioning the complete graph
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- Three princesses
1 ... 9, 10, 11by Fleshpiston » Fri Jul 14, 2006 8:25 am UTC - 407 Replies
- 125733 Views
- Last post by tomtom2357
Tue Nov 26, 2013 2:52 am UTC
- Three princesses
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- Problem of the Universe
1, 2by tomtom2357 » Tue Jul 16, 2013 4:46 am UTC - 57 Replies
- 8023 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
- 1021 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
- 380 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
- 4299 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
- 6362 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
- 795 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
- 809 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
- 7332 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
- 9355 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
- 533 Views
- Last post by theme
Sun Nov 03, 2013 7:58 am UTC
- Crypto challenge
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- Prisoners disguised as guards
by wraith » Mon Oct 28, 2013 1:59 pm UTC - 28 Replies
- 1857 Views
- Last post by skeptical scientist
Thu Oct 31, 2013 3:27 pm UTC
- Prisoners disguised as guards
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- Parking on a hill
1, 2by RivuletBlue » Wed Oct 16, 2013 10:41 pm UTC - 40 Replies
- 2521 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
- 1772 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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- Mother of All Puzzles
1, 2, 3by GeoffreyY » Fri Mar 08, 2013 12:14 pm UTC - 83 Replies
- 18676 Views
- Last post by ALFERALFER
Thu Oct 24, 2013 3:41 pm UTC
- Mother of All Puzzles
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- My code want to be cracked.
by Chaest » Wed Oct 16, 2013 9:41 am UTC - 0 Replies
- 655 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
- 4713 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
- 1731 Views
- Last post by tomtom2357
Thu Oct 10, 2013 12:26 am UTC
- Non-transitive dice
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- The Ungoogleable
1, 2, 3, 4by Christo » Sun Nov 07, 2010 3:42 pm UTC - 125 Replies
- 41264 Views
- Last post by taintedspuds8
Fri Sep 27, 2013 9:08 am UTC
- The Ungoogleable
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- Pennies in Boxes
1, 2by undecim » Thu Sep 06, 2012 10:06 pm UTC - 71 Replies
- 24036 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
- 3655 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
- 3708 Views
- Last post by Sprocklem
Sat Sep 21, 2013 11:11 pm UTC
- Can you crack this?
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- Interpret this sequence 1893 900 5 1040 ...
by xkcud » Mon Oct 10, 2011 5:46 am UTC - 11 Replies
- 2761 Views
- Last post by jestingrabbit
Sat Sep 21, 2013 6:14 am UTC
- Interpret this sequence 1893 900 5 1040 ...
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- Towers, Courtyard, and trees
by Trebla » Wed Dec 07, 2011 3:06 pm UTC - 36 Replies
- 5055 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
- 764 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
- 1868 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
- 4479 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
- 5010 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
- 7407 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
- 1851 Views
- Last post by Lopsidation
Tue Jul 30, 2013 5:29 pm UTC
- Sandra & Woo crypto challenge
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- A coin problem
by MarvinDingleberry » Tue Jul 16, 2013 1:17 pm UTC - 3 Replies
- 1997 Views
- Last post by mward
Tue Jul 30, 2013 9:07 am UTC
- A coin problem
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- 100 rooms, a real sequence, and the axiom of choice
by Jrthedawg » Fri Jul 19, 2013 4:49 pm UTC - 9 Replies
- 2362 Views
- Last post by Xenomortis
Mon Jul 22, 2013 8:05 am UTC
- 100 rooms, a real sequence, and the axiom of choice
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- Pattern Puzzle
by alonsyalonso » Wed Jul 10, 2013 11:46 pm UTC - 3 Replies
- 2437 Views
- Last post by dudiobugtron
Tue Jul 16, 2013 2:10 am UTC
- Pattern Puzzle
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- Hats
1, 2by atomicenergy » Tue May 28, 2013 11:30 pm UTC - 42 Replies
- 7221 Views
- Last post by sfwc
Tue Jul 09, 2013 6:03 pm UTC
- Hats
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- 3rd annual Cisra puzzle competition
by Tass » Sun Mar 29, 2009 9:34 am UTC - 18 Replies
- 7054 Views
- Last post by Adacore
Mon Jul 08, 2013 12:21 am UTC
- 3rd annual Cisra puzzle competition
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- Whose garden has the burgundy roses?
1, 2 by cybersleuther » Tue Mar 26, 2013 9:59 am UTC
- 41 Replies
- 10853 Views
- Last post by LadyMondegreen
Sun Jul 07, 2013 8:56 pm UTC
- Whose garden has the burgundy roses?
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- Solve this puzzle?
by Fremdlinge » Fri Jun 21, 2013 8:05 am UTC
- 5 Replies
- 2696 Views
- Last post by Fremdlinge
Tue Jun 25, 2013 6:42 pm UTC
- Solve this puzzle?
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- "Elvish" cipher
by darkspork » Mon Jun 17, 2013 6:16 pm UTC
- 0 Replies
- 1645 Views
- Last post by darkspork
Mon Jun 17, 2013 6:16 pm UTC
- "Elvish" cipher
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- The case of the mysterious dead fish
by waylandsmithy » Fri Jun 14, 2013 6:27 pm UTC - 2 Replies
- 1871 Views
- Last post by jestingrabbit
Mon Jun 17, 2013 2:55 pm UTC
- The case of the mysterious dead fish
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- Can you crack this code?
by ibgdude » Mon Jun 03, 2013 7:55 am UTC
- 9 Replies
- 3881 Views
- Last post by Tim Harrod
Wed Jun 12, 2013 11:24 am UTC
- Can you crack this code?
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