Advanced methods and approaches for solving Sudoku puzzles
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- One paper+pencil technique to find xy-type forcing chains
by tso » Tue Feb 28, 2006 3:20 am
- 0 Replies
- 2673 Views
- Last post by tso
Tue Feb 28, 2006 3:20 am
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- So could we use a new forcing chain notation?
by Myth Jellies » Thu Feb 09, 2006 10:48 am
- 9 Replies
- 6397 Views
- Last post by Carcul
Mon Feb 27, 2006 11:07 am
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- New Member need help with 'colours'
by moggymidge » Sun Feb 19, 2006 10:03 am
- 19 Replies
- 8725 Views
- Last post by vidarino
Sun Feb 26, 2006 8:16 am
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- "No Hint Available..."
by bradles » Thu Feb 23, 2006 11:44 am
- 7 Replies
- 5298 Views
- Last post by ronk
Sat Feb 25, 2006 10:01 pm
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- Nice loops for intermediate level players - Grouped xy-chain
by Jeff » Tue Jan 24, 2006 1:55 pm
- 2 Replies
- 5351 Views
- Last post by Jeff
Fri Feb 24, 2006 4:09 am
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- Techniques
by Chessmaster » Thu Feb 23, 2006 12:38 am
- 1 Replies
- 2568 Views
- Last post by angusj
Thu Feb 23, 2006 12:54 am
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- Reduction to 2 mutually exclusive pairs
by geocant » Wed Feb 22, 2006 1:55 pm
- 1 Replies
- 2164 Views
- Last post by vidarino
Wed Feb 22, 2006 2:11 pm
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- More uniqueness fun
by vidarino » Mon Feb 20, 2006 11:33 pm
- 2 Replies
- 3098 Views
- Last post by vidarino
Tue Feb 21, 2006 12:55 am
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- xy chains
by dneely » Sat Feb 11, 2006 1:40 am
- 8 Replies
- 4579 Views
- Last post by emm
Mon Feb 20, 2006 2:44 am
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- Colouring with three conjugate chains, I mean four now
by TKiel » Mon Feb 13, 2006 3:18 pm
- 18 Replies
- 10623 Views
- Last post by ronk
Mon Feb 20, 2006 12:51 am
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- Vidar's Monster #2
by vidarino » Mon Feb 13, 2006 9:31 am
- 32 Replies
- 20903 Views
- Last post by ronk
Sun Feb 19, 2006 9:47 pm
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- Another "Monster" Puzzle
by Carcul » Mon Feb 13, 2006 5:28 pm
- 4 Replies
- 2819 Views
- Last post by tso
Sat Feb 18, 2006 5:05 pm
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- special paper form
by Big Al » Tue Feb 14, 2006 1:43 am
- 3 Replies
- 2192 Views
- Last post by Cec
Sat Feb 18, 2006 10:23 am
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- reunification
by jburke » Wed Feb 15, 2006 3:47 pm
- 2 Replies
- 2084 Views
- Last post by ronk
Wed Feb 15, 2006 5:14 pm
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- Almost Hidden Sets--Useful? Redundant?
by re'born » Mon Feb 13, 2006 7:17 am
- 7 Replies
- 5883 Views
- Last post by aeb
Wed Feb 15, 2006 12:33 am
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- Downscoring some "Sudokus We Can't Solve By Logic"
by algol » Sun Feb 12, 2006 7:08 pm
- 8 Replies
- 5707 Views
- Last post by algol
Tue Feb 14, 2006 4:39 pm
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- two "new" techniques, Skyscraper and 2-string Kite
by Havard » Mon Dec 26, 2005 4:23 am
- 60 Replies
- 53829 Views
- Last post by Havard
Tue Feb 14, 2006 4:23 pm
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- puzzle with uniqueness type 3?
by Havard » Thu Feb 02, 2006 10:35 am
- 56 Replies
- 34977 Views
- Last post by tarek
Tue Feb 14, 2006 7:02 am
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- Samurai Sudoku solver
by Guest » Tue Feb 14, 2006 3:30 am
- 0 Replies
- 2609 Views
- Last post by Guest
Tue Feb 14, 2006 3:30 am
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- Creating Sudoku puzzles
by luvsudoku » Sun Feb 12, 2006 7:27 pm
- 4 Replies
- 2982 Views
- Last post by deam3r
Mon Feb 13, 2006 4:58 am
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- Three Puzzles
by Carcul » Thu Feb 09, 2006 11:03 am
- 25 Replies
- 9064 Views
- Last post by gsf
Mon Feb 13, 2006 3:15 am
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- New to Sudoku, Expert help needed about advanced techniques
by Gunns » Sat Feb 11, 2006 4:40 pm
- 1 Replies
- 2409 Views
- Last post by TKiel
Sat Feb 11, 2006 8:16 pm
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- How is this (forcing chain?) called?
by henk » Sat Feb 11, 2006 4:02 pm
- 4 Replies
- 2226 Views
- Last post by tarek
Sat Feb 11, 2006 4:40 pm
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- Multi colouring - expert help required
by CathyW » Fri Feb 10, 2006 10:24 am
- 5 Replies
- 2680 Views
- Last post by CathyW
Fri Feb 10, 2006 11:10 pm
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- What methods do you use past forcing chains? (2nd try)
by tso » Mon Feb 06, 2006 6:24 am
- 42 Replies
- 24011 Views
- Last post by Carcul
Thu Feb 09, 2006 10:28 am
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- Generalization of XYZ-wing
by vidarino » Wed Feb 08, 2006 3:36 pm
- 7 Replies
- 7598 Views
- Last post by aeb
Thu Feb 09, 2006 12:01 am
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- Error Chains (new solve technique?)
by Graeme » Mon Feb 06, 2006 10:39 am
- 16 Replies
- 7326 Views
- Last post by Havard
Wed Feb 08, 2006 9:03 pm
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- A tough one?
by vidarino » Tue Feb 07, 2006 11:49 pm
- 7 Replies
- 3343 Views
- Last post by aeb
Wed Feb 08, 2006 4:16 pm
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- What methods do you use past mixed forcing chains + nishio?
by tso » Sun Feb 05, 2006 7:16 pm
- 17 Replies
- 6145 Views
- Last post by Jeff
Tue Feb 07, 2006 3:15 am
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- sudoku of the day step by step solution
by michgirl » Fri Feb 03, 2006 4:02 pm
- 4 Replies
- 3042 Views
- Last post by Havard
Mon Feb 06, 2006 12:21 pm
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- Colouring question
by pjaj » Fri Feb 03, 2006 5:31 pm
- 7 Replies
- 2952 Views
- Last post by TKiel
Sun Feb 05, 2006 5:20 pm
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- Unique non-rectangles?
by PhilC » Fri Feb 03, 2006 11:26 pm
- 8 Replies
- 3023 Views
- Last post by tarek
Sat Feb 04, 2006 11:39 am
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- minimum numbers in sudo ku
by prateek » Tue Jan 31, 2006 1:39 pm
- 4 Replies
- 3559 Views
- Last post by sas
Fri Feb 03, 2006 10:32 pm
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- A deduction from uniqueness
by Scott H » Fri Jul 29, 2005 4:54 am
- 36 Replies
- 21182 Views
- Last post by Moschopulus
Fri Feb 03, 2006 12:33 pm
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- Is the "hidden subset" technique necessary?
by Christianbuus » Fri Feb 03, 2006 10:12 am
- 2 Replies
- 2587 Views
- Last post by Jeff
Fri Feb 03, 2006 11:10 am
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- Uniqueness & XY/XYZ wing
by tarek » Thu Feb 02, 2006 4:52 pm
- 2 Replies
- 2066 Views
- Last post by tarek
Thu Feb 02, 2006 5:40 pm
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- Multiple Colors in Simple Sudoku
by JeffInCA » Tue Jan 31, 2006 5:47 am
- 6 Replies
- 3823 Views
- Last post by JeffInCA
Tue Jan 31, 2006 10:46 am
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- what solving technique should have been applied here?
by papakapp » Mon Jan 30, 2006 8:31 am
- 7 Replies
- 3408 Views
- Last post by eclark
Tue Jan 31, 2006 4:40 am
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- Need more difficult puzzle
by jsmarba » Mon Jan 30, 2006 6:02 pm
- 1 Replies
- 1706 Views
- Last post by CathyW
Mon Jan 30, 2006 6:28 pm
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- Request
by handshakeit » Mon Jan 30, 2006 7:08 am
- 1 Replies
- 1539 Views
- Last post by Shazbot
Mon Jan 30, 2006 9:07 am
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