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- Generating all sudokus from a bit pattern
1, 2by ThemePark » Mon Aug 15, 2011 12:21 am - 17 Replies
- 3116 Views
- Last post by ab
Wed Aug 24, 2011 3:53 pm
- Generating all sudokus from a bit pattern
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- Orthogonal sudoku
by giant » Wed Sep 14, 2005 7:49 am - 5 Replies
- 5319 Views
- Last post by Smythe Dakota
Tue Aug 16, 2011 10:50 pm
- Orthogonal sudoku
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- "Graeco-Latin Soduku" challenge
by tinfoil » Fri Jun 17, 2005 6:29 pm - 11 Replies
- 8868 Views
- Last post by tarek
Sun Jul 31, 2011 7:39 pm
- "Graeco-Latin Soduku" challenge
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- Re-symmetricise A Puzzle?
by civiliza » Thu Jul 07, 2011 6:43 pm - 2 Replies
- 1235 Views
- Last post by civiliza
Wed Jul 20, 2011 7:14 pm
- Re-symmetricise A Puzzle?
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- How adding another clue can make a puzzle harder?
by JeJ » Fri Mar 11, 2011 7:54 pm - 8 Replies
- 1578 Views
- Last post by RW
Sun May 22, 2011 2:26 pm
- How adding another clue can make a puzzle harder?
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- The "right" approach to solve a puzzle
by JeJ » Tue Mar 01, 2011 9:54 pm - 4 Replies
- 1568 Views
- Last post by kifotv
Sun May 22, 2011 7:03 am
- The "right" approach to solve a puzzle
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- Valid puzzles for Fractal Pattern
1, 2by Serg » Sat Apr 02, 2011 12:10 pm - 16 Replies
- 3256 Views
- Last post by dobrichev
Thu Apr 28, 2011 4:12 pm
- Valid puzzles for Fractal Pattern
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- How do you type the code in a text editor?
by JeJ » Sat Feb 12, 2011 4:21 pm - 3 Replies
- 1369 Views
- Last post by Pat
Sun Feb 13, 2011 12:45 pm
- How do you type the code in a text editor?
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- Finding unavoidable sets
by RW » Fri Feb 11, 2011 8:54 am - 2 Replies
- 2138 Views
- Last post by RW
Fri Feb 11, 2011 10:17 am
- Finding unavoidable sets
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- Sudoku generator
by lerxst » Mon Dec 13, 2010 6:16 pm - 1 Replies
- 1191 Views
- Last post by m_b_metcalf
Mon Dec 13, 2010 9:26 pm
- Sudoku generator
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- Low-Stepper STD-27
by Pyrrho » Fri Dec 10, 2010 7:03 pm - 4 Replies
- 1482 Views
- Last post by m_b_metcalf
Mon Dec 13, 2010 5:43 pm
- Low-Stepper STD-27
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- Rating standard
by lerxst » Mon Dec 13, 2010 4:55 am - 2 Replies
- 1214 Views
- Last post by ronk
Mon Dec 13, 2010 1:51 pm
- Rating standard
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- Reviewers and bloggers
by nicolaca » Thu Dec 02, 2010 11:10 am - 0 Replies
- 1202 Views
- Last post by nicolaca
Thu Dec 02, 2010 11:10 am
- Reviewers and bloggers
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- Sudoku solved in world record time?
by 999_Springs » Sun Oct 31, 2010 10:30 pm - 1 Replies
- 2242 Views
- Last post by m_b_metcalf
Mon Nov 01, 2010 6:52 am
- Sudoku solved in world record time?
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- Combinations of 3 or 4 strong and weak inferences
by 999_Springs » Sun Oct 10, 2010 10:30 pm - 6 Replies
- 2138 Views
- Last post by daj95376
Mon Nov 01, 2010 12:04 am
- Combinations of 3 or 4 strong and weak inferences
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- new challenges
by ab » Sun Oct 24, 2010 7:41 pm - 10 Replies
- 2023 Views
- Last post by Red Ed
Sat Oct 30, 2010 5:52 pm
- new challenges
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- NQS (not-quite-superior)
by Pat » Tue Oct 19, 2010 9:06 am - 0 Replies
- 1266 Views
- Last post by Pat
Tue Oct 19, 2010 9:06 am
- NQS (not-quite-superior)
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- Grid Momentum
by dobrichev » Mon Oct 11, 2010 11:55 pm - 5 Replies
- 1637 Views
- Last post by eleven
Wed Oct 13, 2010 3:48 pm
- Grid Momentum
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- Puzzle with only naked singles or hidden singles?
by AR4793 » Wed Sep 29, 2010 7:17 pm - 4 Replies
- 2225 Views
- Last post by Pat
Tue Oct 12, 2010 11:24 am
- Puzzle with only naked singles or hidden singles?
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- Techniques: difficulty for humans
by mariano_donati » Mon Sep 06, 2010 6:34 am - 0 Replies
- 1184 Views
- Last post by mariano_donati
Mon Sep 06, 2010 6:34 am
- Techniques: difficulty for humans
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- Maximum empty cells when hints are used
by billeioru » Mon Sep 06, 2010 3:40 am - 0 Replies
- 1174 Views
- Last post by billeioru
Mon Sep 06, 2010 3:40 am
- Maximum empty cells when hints are used
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- DOOFUS Is Taking Over The World
by 999_Springs » Mon Aug 30, 2010 7:55 pm
- 0 Replies
- 1128 Views
- Last post by 999_Springs
Mon Aug 30, 2010 7:55 pm
- DOOFUS Is Taking Over The World
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- Solution Path to the Easter Monster Puzzle
by 999_Springs » Mon Aug 30, 2010 7:49 pm - 0 Replies
- 1448 Views
- Last post by 999_Springs
Mon Aug 30, 2010 7:49 pm
- Solution Path to the Easter Monster Puzzle
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- Solving without pencil marks
by Noumenon » Wed Aug 25, 2010 3:46 pm - 2 Replies
- 3954 Views
- Last post by gsf
Wed Aug 25, 2010 4:13 pm
- Solving without pencil marks
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- Symmetrically-clued 17s
by Red Ed » Sat Mar 18, 2006 3:03 pm - 6 Replies
- 6574 Views
- Last post by ronk
Tue Aug 24, 2010 11:11 am
- Symmetrically-clued 17s
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- First symmetric 17-clues puzzle is found!
by Serg » Thu Aug 12, 2010 6:17 pm - 2 Replies
- 1323 Views
- Last post by Serg
Fri Aug 13, 2010 6:32 am
- First symmetric 17-clues puzzle is found!
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- Fantastic new tool to find new 17 given sudokus
by JPSangin » Sun Jul 18, 2010 3:28 pm
- 14 Replies
- 1617 Views
- Last post by ronk-Moderator
Sat Jul 24, 2010 8:51 pm
- Fantastic new tool to find new 17 given sudokus
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- Band Signatures and Uses
by holdout » Tue Jul 20, 2010 10:03 pm - 0 Replies
- 1112 Views
- Last post by holdout
Tue Jul 20, 2010 10:03 pm
- Band Signatures and Uses
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- Need help in some probability calculations
1, 2by dobrichev » Wed Jun 16, 2010 4:46 pm - 22 Replies
- 2978 Views
- Last post by dobrichev
Wed Jul 07, 2010 6:15 pm
- Need help in some probability calculations
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- rookery numbers
by dukuso » Tue Jun 22, 2010 8:35 am - 8 Replies
- 1370 Views
- Last post by dukuso
Wed Jun 23, 2010 7:31 am
- rookery numbers
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- gang of 44 , gang of 416
1, 2by dukuso » Mon Jun 07, 2010 8:40 am - 20 Replies
- 3816 Views
- Last post by dukuso
Thu Jun 10, 2010 7:51 am
- gang of 44 , gang of 416
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- copyright on sudokus
by dukuso » Tue May 25, 2010 8:47 am - 3 Replies
- 1169 Views
- Last post by Pat
Tue May 25, 2010 1:38 pm
- copyright on sudokus
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- save draft
by dukuso » Tue May 25, 2010 8:03 am - 1 Replies
- 1068 Views
- Last post by Pat
Tue May 25, 2010 11:20 am
- save draft
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