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- Backdoor, T&E or Colouring?
by Yogi » Mon Nov 25, 2019 5:16 am - 5 Replies
- 1327 Views
- Last post by Mauriès Robert
Sat Nov 30, 2019 4:35 pm
- Backdoor, T&E or Colouring?
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- Help with Next Steps in this game
by azncandylovero4 » Sat Nov 23, 2019 8:27 pm
- 2 Replies
- 993 Views
- Last post by azncandylovero4
Sun Nov 24, 2019 2:03 pm
- Help with Next Steps in this game
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- Double Sudoku 9x9 success
by Pupp » Tue Nov 05, 2019 2:54 am - 3 Replies
- 2048 Views
- Last post by 1to9only
Tue Nov 12, 2019 5:27 pm
- Double Sudoku 9x9 success
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- High Clue Puzzles
by Mathimagics » Mon Nov 04, 2019 9:45 am - 5 Replies
- 1201 Views
- Last post by dobrichev
Mon Nov 04, 2019 1:24 pm
- High Clue Puzzles
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- No grids with MCN > 16
by Mathimagics » Tue Jul 23, 2019 6:23 pm - 8 Replies
- 1494 Views
- Last post by dobrichev
Mon Nov 04, 2019 12:36 pm
- No grids with MCN > 16
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- Hello everybody (I'm new)
by Pupp » Sun Oct 20, 2019 2:28 pm - 7 Replies
- 1249 Views
- Last post by Pupp
Sat Oct 26, 2019 11:56 am
- Hello everybody (I'm new)
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- How to Solve a Sudoku
by luanvanviet » Fri Sep 27, 2019 9:40 am - 1 Replies
- 1212 Views
- Last post by Pupp
Mon Oct 21, 2019 2:58 am
- How to Solve a Sudoku
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- Newspaper Ratings
by m_b_metcalf » Tue Oct 01, 2019 3:08 pm - 1 Replies
- 1099 Views
- Last post by dobrichev
Tue Oct 01, 2019 3:31 pm
- Newspaper Ratings
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- Intrinsically Difficult Patterns
by m_b_metcalf » Wed Apr 01, 2009 4:38 pm - 2 Replies
- 2354 Views
- Last post by champagne
Sun Sep 08, 2019 12:26 pm
- Intrinsically Difficult Patterns
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- Rating Invalid puzzles
by dobrichev » Mon Jul 22, 2019 2:39 pm - 11 Replies
- 1542 Views
- Last post by denis_berthier
Wed Jul 24, 2019 2:29 pm
- Rating Invalid puzzles
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- Minimum number of checks
1 ... 4, 5, 6 by denis_berthier » Sun Jun 30, 2019 6:18 am
- 83 Replies
- 11484 Views
- Last post by StrmCkr
Mon Jul 22, 2019 7:06 pm
- Minimum number of checks
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- Intercalates v UA4's
1, 2by Mathimagics » Fri Jul 19, 2019 7:57 am - 15 Replies
- 2196 Views
- Last post by dobrichev
Mon Jul 22, 2019 2:22 pm
- Intercalates v UA4's
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- UA Set for a Given Grid
1, 2, 3by Mathimagics » Fri Jun 28, 2019 3:50 pm - 31 Replies
- 3986 Views
- Last post by Mathimagics
Mon Jul 01, 2019 12:05 pm
- UA Set for a Given Grid
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- Android Sudoku app
by JasonLion » Fri Jun 28, 2019 7:10 pm - 1 Replies
- 1136 Views
- Last post by 1to9only
Fri Jun 28, 2019 7:56 pm
- Android Sudoku app
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- Investigation of one-band-free patterns
by dogiaokhanhlinh » Mon May 27, 2019 9:33 am - 3 Replies
- 1342 Views
- Last post by Mathimagics
Wed May 29, 2019 2:54 am
- Investigation of one-band-free patterns
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- Sudoku variants summary
by Wecoc » Mon May 13, 2019 6:38 pm - 0 Replies
- 2011 Views
- Last post by Wecoc
Mon May 13, 2019 6:38 pm
- Sudoku variants summary
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- How to Solve Sudoku Puzzles
by luanvanviet » Wed Feb 13, 2019 8:27 am - 1 Replies
- 1376 Views
- Last post by susannelson
Fri May 10, 2019 6:37 am
- How to Solve Sudoku Puzzles
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- Creating a puzzle, help
by Trilola » Sun Apr 07, 2019 2:01 am - 7 Replies
- 1494 Views
- Last post by brunoz
Mon May 06, 2019 9:22 am
- Creating a puzzle, help
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- gaming system and method for sudoku-based game - patent
by 1to9only » Fri Apr 12, 2019 9:19 am - 0 Replies
- 1079 Views
- Last post by 1to9only
Fri Apr 12, 2019 9:19 am
- gaming system and method for sudoku-based game - patent
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- Sudoku Survey
by aml » Thu Feb 14, 2019 2:03 pm - 6 Replies
- 1413 Views
- Last post by Mathimagics
Sat Feb 23, 2019 8:37 pm
- Sudoku Survey
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- ColorKu inspired sculpture
by drepetto » Tue Feb 12, 2019 9:04 pm
- 0 Replies
- 1120 Views
- Last post by drepetto
Tue Feb 12, 2019 9:04 pm
- ColorKu inspired sculpture
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- Counting minimal puzzles: subsets, supersets, etc.
by hoangtaybaokiem1993 » Mon Jan 14, 2019 4:45 am - 0 Replies
- 1077 Views
- Last post by hoangtaybaokiem1993
Mon Jan 14, 2019 4:45 am
- Counting minimal puzzles: subsets, supersets, etc.
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- Nomenclatura
by coyote56 » Tue Feb 13, 2018 9:48 pm - 1 Replies
- 1488 Views
- Last post by NicoleAngela
Sat Jan 12, 2019 10:18 am
- Nomenclatura
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- My Nightmares and One-Trick Ponies
by 200e200w » Sun Jan 28, 2018 7:47 pm
- 3 Replies
- 1718 Views
- Last post by NicoleAngela
Sat Jan 12, 2019 10:16 am
- My Nightmares and One-Trick Ponies
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- i have noticed that some puzzles
by tarek » Wed Jan 09, 2019 3:15 pm - 0 Replies
- 1083 Views
- Last post by tarek
Wed Jan 09, 2019 3:15 pm
- i have noticed that some puzzles
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- Did I just break the World Record of Speed Sudoku?!!
by Madolite » Tue Dec 11, 2018 2:55 am
- 11 Replies
- 33225 Views
- Last post by Madolite
Tue Jan 08, 2019 9:09 am
- Did I just break the World Record of Speed Sudoku?!!
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- Latin Phrasebook?
by Mathimagics » Thu Dec 27, 2018 4:28 am - 2 Replies
- 1589 Views
- Last post by Mathimagics
Thu Dec 27, 2018 12:05 pm
- Latin Phrasebook?
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- Sudoku Symmetry Group (minimal spec)
1 ... 4, 5, 6by Mathimagics » Sat Dec 15, 2018 9:14 pm - 86 Replies
- 8061 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
- 1039 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
- 3475 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
- 1140 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
- 5617 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
- 1632 Views
- Last post by eleven
Sat Oct 13, 2018 7:12 pm
- Human-style sudoku solving techniques
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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
- 3621 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
- 1365 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
- 4256 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
- 2173 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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