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- Puzzles needing lots of locked candidates
1, 2, 3, 4, 5by 999_Springs » Sun Apr 15, 2007 3:17 pm - 61 Replies
- 24936 Views
- Last post by Pat
Thu Oct 03, 2013 1:00 pm
- Puzzles needing lots of locked candidates
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- ALS Algorithm Needed
by Sudtyro2 » Tue Sep 10, 2013 8:01 pm - 4 Replies
- 876 Views
- Last post by Sudtyro2
Wed Sep 11, 2013 6:36 pm
- ALS Algorithm Needed
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- what is Back link?
by tomdean » Tue Sep 03, 2013 7:50 am - 1 Replies
- 672 Views
- Last post by David P Bird
Thu Sep 05, 2013 8:51 am
- what is Back link?
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- Daily Sudoku Forum is down
by keith » Sat Oct 20, 2012 10:07 pm - 14 Replies
- 1650 Views
- Last post by hughwill
Fri Aug 23, 2013 9:05 am
- Daily Sudoku Forum is down
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- Stripping Out Redundant Clues
1, 2, 3by David P Bird » Thu Jan 03, 2013 8:03 pm - 32 Replies
- 2049 Views
- Last post by StrmCkr
Fri Aug 02, 2013 4:48 pm
- Stripping Out Redundant Clues
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- The real distribution of minimal puzzles
1, 2, 3, 4, 5
by denis_berthier » Tue Nov 30, 2010 3:45 pm
- 63 Replies
- 3899 Views
- Last post by denis_berthier
Thu Aug 01, 2013 7:40 am
- The real distribution of minimal puzzles
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- AICs with 9 links - and new original names
by 999_Springs » Wed Jul 24, 2013 9:00 pm - 0 Replies
- 611 Views
- Last post by 999_Springs
Wed Jul 24, 2013 9:00 pm
- AICs with 9 links - and new original names
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- Holes beget holes
1, 2by Red Ed » Thu May 23, 2013 10:17 pm - 18 Replies
- 1234 Views
- Last post by daj95376
Thu May 30, 2013 3:28 pm
- Holes beget holes
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- Universal Elimination Pattern for hard puzzles
1 ... 5, 6, 7by logel » Fri Apr 19, 2013 2:21 pm - 101 Replies
- 5135 Views
- Last post by denis_berthier
Tue May 21, 2013 6:26 am
- Universal Elimination Pattern for hard puzzles
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- How do ARs Arise?
1, 2by David P Bird » Fri Mar 29, 2013 10:02 am - 25 Replies
- 1329 Views
- Last post by denis_berthier
Wed May 08, 2013 3:51 pm
- How do ARs Arise?
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- Sudoku's maths
by Hoetre » Fri Apr 26, 2013 10:24 am - 3 Replies
- 601 Views
- Last post by Hoetre
Sat Apr 27, 2013 1:03 pm
- Sudoku's maths
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- One flew over the backdoors
1, 2, 3, 4, 5by dobrichev » Thu Dec 06, 2012 9:14 pm - 63 Replies
- 2592 Views
- Last post by denis_berthier
Fri Apr 19, 2013 10:21 am
- One flew over the backdoors
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- Four-Row Cover
by holdout » Wed Apr 03, 2013 8:46 pm - 11 Replies
- 755 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
- 588 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
- 528 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
- 569 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
- 2139 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
- 1665 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
- 879 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
- 1830 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
- 677 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
- 1125 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
- 705 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
- 1128 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
- 1844 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
- 1715 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
- 1241 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
- 822 Views
- Last post by 99Games
Thu Feb 09, 2012 10:45 am
- 'Sudoku Seasons - Love Quotes Contest'
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