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- Sudoku solved in world record time?
by 999_Springs » Sun Oct 31, 2010 10:30 pm - 1 Replies
- 854 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
- 785 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
- 605 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
- 463 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
- 630 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
- 1246 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
- 456 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
- 402 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
- 389 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
- 577 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
- 2443 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
- 3874 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
- 560 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
- 707 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
- 388 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
- 1052 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
- 519 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
- 1409 Views
- Last post by dukuso
Thu Jun 10, 2010 7:51 am
- gang of 44 , gang of 416
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- Maximum number of clues for a given SE rating
1 ... 5, 6, 7by 999_Springs » Thu Jul 24, 2008 4:10 pm - 96 Replies
- 17486 Views
- Last post by m_b_metcalf
Fri May 28, 2010 2:07 pm
- Maximum number of clues for a given SE rating
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- copyright on sudokus
by dukuso » Tue May 25, 2010 8:47 am - 3 Replies
- 434 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
- 360 Views
- Last post by Pat
Tue May 25, 2010 11:20 am
- save draft
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- Split - Wing: exemplars and examples
by StrmCkr » Sun May 23, 2010 8:01 am - 1 Replies
- 561 Views
- Last post by StrmCkr
Sun May 23, 2010 8:02 am
- Split - Wing: exemplars and examples
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- Do some Brain Age sudoku puzzles require some guessing?
by ***JULIA*** » Wed Apr 01, 2009 12:17 pm - 3 Replies
- 995 Views
- Last post by lbgirlgamer
Mon May 04, 2009 12:41 am
- Do some Brain Age sudoku puzzles require some guessing?
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- Question about ratio of symmetrical 18 clue sudokus
by olimpia » Fri May 01, 2009 4:19 pm - 0 Replies
- 520 Views
- Last post by olimpia
Fri May 01, 2009 4:19 pm
- Question about ratio of symmetrical 18 clue sudokus
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- Have The Times ever published a pearl?
by 999_Springs » Fri Apr 10, 2009 8:35 pm - 1 Replies
- 621 Views
- Last post by Pat
Mon Apr 20, 2009 10:52 am
- Have The Times ever published a pearl?
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- Does anybody know what this is!?
by 999_Springs » Mon Apr 13, 2009 6:56 pm - 9 Replies
- 875 Views
- Last post by ttt
Sun Apr 19, 2009 4:24 pm
- Does anybody know what this is!?
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- Where can I find medium-level explanations for strategy?
by sparewords » Tue Apr 14, 2009 7:29 pm - 4 Replies
- 695 Views
- Last post by DonM
Thu Apr 16, 2009 11:07 pm
- Where can I find medium-level explanations for strategy?
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- A record named "maximum" of Sudoku list
1, 2, 3, 4by Eioru » Thu Aug 17, 2006 4:11 am - 51 Replies
- 25230 Views
- Last post by 999_Springs
Thu Apr 16, 2009 3:47 pm
- A record named "maximum" of Sudoku list
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- Simple Sudoku -- difficulty-ratings
by delmer » Wed Apr 15, 2009 2:44 am - 0 Replies
- 566 Views
- Last post by delmer
Wed Apr 15, 2009 2:44 am
- Simple Sudoku -- difficulty-ratings
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- B.U.T. algorithm and whole mask makes interesting sudoku
by olimpia » Fri Mar 27, 2009 5:52 pm - 5 Replies
- 892 Views
- Last post by tarek
Mon Apr 13, 2009 1:37 pm
- B.U.T. algorithm and whole mask makes interesting sudoku
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- SGS attack on the 16-clue search problem
by Red Ed » Tue Mar 31, 2009 10:16 am - 14 Replies
- 1334 Views
- Last post by Red Ed
Fri Apr 03, 2009 10:27 pm
- SGS attack on the 16-clue search problem
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- Intrinsically Difficult Patterns
by m_b_metcalf » Wed Apr 01, 2009 4:38 pm - 0 Replies
- 691 Views
- Last post by m_b_metcalf
Wed Apr 01, 2009 4:38 pm
- Intrinsically Difficult Patterns
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- how do you know how many squares to fill in
by olliepenyo » Wed Apr 01, 2009 7:14 am - 0 Replies
- 622 Views
- Last post by olliepenyo
Wed Apr 01, 2009 7:14 am
- how do you know how many squares to fill in
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- Solving for speed
by 999_Springs » Sun Mar 29, 2009 5:51 pm - 4 Replies
- 841 Views
- Last post by StrmCkr
Wed Apr 01, 2009 12:27 am
- Solving for speed
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