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- Hard 5*5 Latin Squares
by qiuyanzhe » Wed Sep 19, 2018 4:22 pm - 7 Replies
- 718 Views
- Last post by qiuyanzhe
Thu Dec 27, 2018 9:53 am
- Hard 5*5 Latin Squares
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- Sudoku Symmetry Group (minimal spec)
1 ... 4, 5, 6by Mathimagics » Sat Dec 15, 2018 9:14 pm - 86 Replies
- 1882 Views
- Last post by blue
Thu Dec 27, 2018 8:53 am
- Sudoku Symmetry Group (minimal spec)
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- Is sudoku good for your brain?
by Axel2801 » Wed Dec 26, 2018 1:44 am - 0 Replies
- 339 Views
- Last post by Axel2801
Wed Dec 26, 2018 1:44 am
- Is sudoku good for your brain?
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- Highest rated 17-clue puzzle?
1, 2by SpAce » Wed Sep 05, 2018 6:06 am - 15 Replies
- 1023 Views
- Last post by m_b_metcalf
Wed Dec 19, 2018 6:38 am
- Highest rated 17-clue puzzle?
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- Sudokus with one solution
by enxio27 » Tue Dec 04, 2018 7:10 pm - 2 Replies
- 403 Views
- Last post by Pat
Wed Dec 05, 2018 1:08 pm
- Sudokus with one solution
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- My 4 year old is doing Sudoku!
by oneshot » Thu Aug 16, 2012 2:19 am - 13 Replies
- 3244 Views
- Last post by gamelover
Mon Oct 22, 2018 8:16 am
- My 4 year old is doing Sudoku!
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- Human-style sudoku solving techniques
by dobrichev » Fri Sep 28, 2018 7:59 am - 9 Replies
- 638 Views
- Last post by eleven
Sat Oct 13, 2018 7:12 pm
- Human-style sudoku solving techniques
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- Sudoku Enumeration Problem
1, 2by Mathimagics » Thu Jan 04, 2018 9:40 am - 21 Replies
- 1698 Views
- Last post by coloin
Sat Oct 06, 2018 6:04 pm
- Sudoku Enumeration Problem
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- Minimum givens on Latin Squares, and r+c+d conjecture
1, 2
by qiuyanzhe » Fri Aug 31, 2018 7:32 am
- 16 Replies
- 1438 Views
- Last post by qiuyanzhe
Sun Sep 09, 2018 3:44 pm
- Minimum givens on Latin Squares, and r+c+d conjecture
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- A question about difficulty rating
by qiuyanzhe » Fri Aug 31, 2018 9:19 am - 6 Replies
- 465 Views
- Last post by eleven
Fri Aug 31, 2018 1:50 pm
- A question about difficulty rating
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- Solution grids with higher potential to have 17-clue puzzles
1, 2 by dobrichev » Fri Aug 03, 2018 3:34 pm
- 19 Replies
- 1641 Views
- Last post by blue
Thu Aug 16, 2018 10:44 pm
- Solution grids with higher potential to have 17-clue puzzles
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- Minimal clues to complete a grid examining k-templates
by dobrichev » Sun Aug 07, 2011 7:43 pm - 3 Replies
- 1140 Views
- Last post by dobrichev
Fri Aug 03, 2018 11:45 am
- Minimal clues to complete a grid examining k-templates
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- SudokuP Empty Boxes
by Serg » Wed Jul 18, 2018 12:47 pm - 7 Replies
- 481 Views
- Last post by Serg
Sat Jul 28, 2018 5:28 pm
- SudokuP Empty Boxes
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- A couple of questions by a newcomer.
by Thedutchguy87 » Fri Apr 27, 2018 4:20 pm - 11 Replies
- 832 Views
- Last post by ghfick
Sat Jun 16, 2018 11:53 pm
- A couple of questions by a newcomer.
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- Could the accepted answer for max solutions be wrong.
1, 2by Sojourner9 » Sun Mar 11, 2018 6:31 pm - 20 Replies
- 1189 Views
- Last post by Sojourner9
Fri May 18, 2018 9:09 pm
- Could the accepted answer for max solutions be wrong.
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- Change Started Invalid Puzzle
by ttst53 » Thu May 17, 2018 11:37 pm - 0 Replies
- 397 Views
- Last post by ttst53
Thu May 17, 2018 11:37 pm
- Change Started Invalid Puzzle
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- A question of tecnique
by VMSguy1 » Wed May 16, 2018 8:40 pm - 0 Replies
- 397 Views
- Last post by VMSguy1
Wed May 16, 2018 8:40 pm
- A question of tecnique
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- 2 question
by Biomage » Thu Apr 12, 2018 1:26 am - 1 Replies
- 527 Views
- Last post by Leren
Thu Apr 12, 2018 8:42 pm
- 2 question
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- Rectángulos Únicos
by coyote56 » Sun Mar 18, 2018 3:21 pm - 2 Replies
- 522 Views
- Last post by JasonLion
Wed Mar 21, 2018 4:46 pm
- Rectángulos Únicos
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- Perfectly Cyclical Sudoku's
by Mathimagics » Fri Mar 09, 2018 9:57 am - 0 Replies
- 507 Views
- Last post by Mathimagics
Fri Mar 09, 2018 9:57 am
- Perfectly Cyclical Sudoku's
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- HodokuSE, a new system of rating
1, 2 by 200e200w » Thu Feb 08, 2018 6:08 pm
- 15 Replies
- 1292 Views
- Last post by SpAce
Thu Feb 15, 2018 10:34 am
- HodokuSE, a new system of rating
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- 200e200w's Top 250
by 200e200w » Sun Feb 04, 2018 1:25 pm
- 0 Replies
- 616 Views
- Last post by 200e200w
Sun Feb 04, 2018 1:25 pm
- 200e200w's Top 250
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- Enumeration of symmetrical patterns
1, 2by Serg » Sun Jan 21, 2018 11:45 pm - 24 Replies
- 1256 Views
- Last post by Serg
Tue Jan 30, 2018 10:27 pm
- Enumeration of symmetrical patterns
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- Unique Sudokus (Russell & Jarvis)
1, 2, 3by Mathimagics » Wed Jan 10, 2018 10:42 pm - 34 Replies
- 1737 Views
- Last post by Mathimagics
Mon Jan 22, 2018 1:50 am
- Unique Sudokus (Russell & Jarvis)
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- Sudoku Validation
by Eltee27 » Tue Jan 16, 2018 1:06 am - 3 Replies
- 607 Views
- Last post by Eltee27
Wed Jan 17, 2018 2:03 am
- Sudoku Validation
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- Easter Monster Derivatives
by FLOCKMAN » Sat Dec 16, 2017 11:46 am
- 9 Replies
- 799 Views
- Last post by FLOCKMAN
Tue Jan 16, 2018 12:41 pm
- Easter Monster Derivatives
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- Transversals in Sudoku Squares
1 ... 4, 5, 6by Mathimagics » Tue Jan 02, 2018 7:25 am - 75 Replies
- 2733 Views
- Last post by Mathimagics
Mon Jan 08, 2018 10:58 pm
- Transversals in Sudoku Squares
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- Snail Trail
by FLOCKMAN » Wed Nov 01, 2017 4:54 pm - 9 Replies
- 831 Views
- Last post by StrmCkr
Tue Dec 19, 2017 8:12 am
- Snail Trail
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- Sudoku Grid
by Jill » Wed Nov 08, 2017 4:07 pm - 1 Replies
- 646 Views
- Last post by Leren
Thu Nov 09, 2017 9:02 pm
- Sudoku Grid
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- No new 17s within {-3+3}
by dobrichev » Mon Jun 20, 2016 10:47 am - 9 Replies
- 1618 Views
- Last post by coloin
Sat Oct 21, 2017 9:33 am
- No new 17s within {-3+3}
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- M-wings & m-rings: exemplars & examples
by ronk » Tue May 25, 2010 9:38 pm - 11 Replies
- 2546 Views
- Last post by Leren
Fri Oct 20, 2017 7:26 pm
- M-wings & m-rings: exemplars & examples
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- Hidden Quadruple (Quad) puzzles
1, 2 by tarek » Tue Jan 03, 2012 10:27 am
- 29 Replies
- 3000 Views
- Last post by tarek
Tue Sep 12, 2017 7:51 pm
- Hidden Quadruple (Quad) puzzles
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- Colored Sudokus Easier than with Numbers?
by bloggeroliver » Wed Jul 26, 2017 11:11 pm - 1 Replies
- 647 Views
- Last post by yaling.zheng
Sat Jul 29, 2017 3:21 am
- Colored Sudokus Easier than with Numbers?
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- What's ur best time for easy sudoku?
by fragyn » Wed Jul 12, 2017 6:41 pm - 0 Replies
- 734 Views
- Last post by fragyn
Wed Jul 12, 2017 6:41 pm
- What's ur best time for easy sudoku?
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- minimum number of clues 16x16 and higher
by Moschopulus » Fri Aug 12, 2005 12:00 pm - 7 Replies
- 3630 Views
- Last post by coloin
Tue Jul 11, 2017 2:28 pm
- minimum number of clues 16x16 and higher
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- sudoku is a 6-dimensional problem
by dukuso » Mon Nov 07, 2005 8:28 am
- 6 Replies
- 4151 Views
- Last post by StrmCkr
Mon May 29, 2017 4:27 am
- sudoku is a 6-dimensional problem
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