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- Four-Row Cover
by holdout » Wed Apr 03, 2013 8:46 pm - 11 Replies
- 1714 Views
- Last post by Red Ed
Wed Apr 17, 2013 9:37 pm
- Four-Row Cover
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- Counting Cases
by David P Bird » Wed Apr 17, 2013 10:25 am - 1 Replies
- 1250 Views
- Last post by dobrichev
Wed Apr 17, 2013 6:15 pm
- Counting Cases
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- Sudokus with one solution
by Krillere » Wed Feb 20, 2013 2:13 pm - 1 Replies
- 1239 Views
- Last post by champagne
Thu Feb 21, 2013 2:27 am
- Sudokus with one solution
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- Please share with us the tricks
by edwardfranco » Tue Jan 22, 2013 7:39 am - 0 Replies
- 1194 Views
- Last post by edwardfranco
Tue Jan 22, 2013 7:39 am
- Please share with us the tricks
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- There is no 16-clue puzzle
1, 2by moschopulus2 » Sun Jan 01, 2012 12:53 pm - 15 Replies
- 3943 Views
- Last post by 999_Springs
Sun Jan 20, 2013 10:46 pm
- There is no 16-clue puzzle
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- cannot access sudopedia.org
by engage » Sat Feb 04, 2012 2:43 pm - 12 Replies
- 2659 Views
- Last post by David P Bird
Sun Nov 25, 2012 7:24 am
- cannot access sudopedia.org
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- even & odd numbers formation
by 7b53 » Thu Oct 04, 2012 4:11 am - 5 Replies
- 1647 Views
- Last post by Pat
Wed Oct 10, 2012 1:20 pm
- even & odd numbers formation
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- Andrew Stuart - Weekly Extreme 'Unsolveable' Sudoku Puzzle
by JC Van Hay » Fri Apr 06, 2012 2:23 pm - 11 Replies
- 3052 Views
- Last post by champagne
Sun Sep 30, 2012 3:26 pm
- Andrew Stuart - Weekly Extreme 'Unsolveable' Sudoku Puzzle
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- Does adding colors with numbers help solving sudoku?
by sukugo » Sat Sep 15, 2012 12:24 am - 1 Replies
- 1271 Views
- Last post by JasonLion
Sat Sep 15, 2012 6:32 pm
- Does adding colors with numbers help solving sudoku?
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- Extremely Hard Sudoku
by TheMoop » Fri Aug 24, 2012 1:03 am - 2 Replies
- 1786 Views
- Last post by JasonLion
Fri Aug 24, 2012 12:46 pm
- Extremely Hard Sudoku
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- Telkin Hard Sudoku Thread
by Telkin » Wed Jul 11, 2012 9:52 pm - 3 Replies
- 1332 Views
- Last post by Pat
Wed Jul 25, 2012 7:54 am
- Telkin Hard Sudoku Thread
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- Cycle factorization classes
by Serg » Tue Jul 24, 2012 10:52 pm
- 0 Replies
- 1930 Views
- Last post by Serg
Tue Jul 24, 2012 10:52 pm
- Cycle factorization classes
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- The hardest-ever sudoku?
by dino_hsu_1019 » Thu Jul 12, 2012 10:44 am - 1 Replies
- 2498 Views
- Last post by Pat
Thu Jul 12, 2012 11:09 am
- The hardest-ever sudoku?
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- One-band patterns
1, 2by Serg » Sun Apr 01, 2012 4:16 pm - 16 Replies
- 3280 Views
- Last post by Serg
Tue Jun 12, 2012 7:48 pm
- One-band patterns
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- Invalid (incompletable) 4-template(s)
1, 2by dobrichev » Wed Feb 08, 2012 11:28 pm - 21 Replies
- 2837 Views
- Last post by David P Bird
Sun Feb 12, 2012 10:52 am
- Invalid (incompletable) 4-template(s)
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- 'Sudoku Seasons - Love Quotes Contest'
by 99Games » Thu Feb 09, 2012 10:45 am - 0 Replies
- 1446 Views
- Last post by 99Games
Thu Feb 09, 2012 10:45 am
- 'Sudoku Seasons - Love Quotes Contest'
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- sudoku 20*20 (5*4)
by whk01 » Wed Jan 11, 2012 10:38 pm - 0 Replies
- 1298 Views
- Last post by whk01
Wed Jan 11, 2012 10:38 pm
- sudoku 20*20 (5*4)
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- Puzzle design by remove-add and remove-remove-add steps
by Thierry Moreau » Mon Jan 02, 2012 6:36 pm - 0 Replies
- 1336 Views
- Last post by Thierry Moreau
Mon Jan 02, 2012 6:36 pm
- Puzzle design by remove-add and remove-remove-add steps
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- Super Sudoku Puzzle Solver that has letters & numbers combined?
by angelofthenight » Sun Nov 13, 2011 8:41 pm - 4 Replies
- 2918 Views
- Last post by bundy
Sun Jan 01, 2012 7:41 pm
- Super Sudoku Puzzle Solver that has letters & numbers combined?
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- Happy new 2012 year!
by Serg » Sat Dec 31, 2011 9:54 pm - 0 Replies
- 1167 Views
- Last post by Serg
Sat Dec 31, 2011 9:54 pm
- Happy new 2012 year!
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- Puzzle design method, all handcrafted
by Thierry Moreau » Sat Dec 24, 2011 11:16 am - 5 Replies
- 1769 Views
- Last post by Thierry Moreau
Tue Dec 27, 2011 4:18 pm
- Puzzle design method, all handcrafted
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- Sparse Matrix Sudoku Problem
by wuzhenzhi » Wed Dec 21, 2011 11:15 am
- 0 Replies
- 1311 Views
- Last post by wuzhenzhi
Wed Dec 21, 2011 11:15 am
- Sparse Matrix Sudoku Problem
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- Blank grids
by Hache » Wed Dec 07, 2011 3:55 pm
- 3 Replies
- 2317 Views
- Last post by SadMan
Sun Dec 11, 2011 10:44 pm
- Blank grids
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- On zero solutions
by m_b_metcalf » Mon Nov 28, 2011 2:11 am - 6 Replies
- 1487 Views
- Last post by m_b_metcalf
Thu Dec 08, 2011 11:42 pm
- On zero solutions
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- Recommendation for Nintendo DS
by lbayorkie » Sat Sep 03, 2011 2:15 pm - 0 Replies
- 1106 Views
- Last post by lbayorkie
Sat Sep 03, 2011 2:15 pm
- Recommendation for Nintendo DS
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- Generating all sudokus from a bit pattern
1, 2by ThemePark » Mon Aug 15, 2011 12:21 am - 17 Replies
- 3061 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
- 5270 Views
- Last post by Smythe Dakota
Tue Aug 16, 2011 10:50 pm
- Orthogonal sudoku
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