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The mathematics of sudoku
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No new posts What's the maximum number of clues for a minimal Sudoku?
1 Obi-Wahn 529 Wed Jul 02, 2014 11:25 pm
coloin View latest post
No new posts First and Last ever Sudoku.
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29 rjamil 3587 Wed Feb 19, 2014 7:01 am
rjamil View latest post
No new posts Biggest pattern
1 ChPicard 344 Thu Oct 31, 2013 12:41 am
dpbobelisk View latest post
No new posts Building the 416 bands from scratch
3 ThemePark 1373 Thu Apr 11, 2013 9:55 pm
strmckr View latest post
No new posts Two-boxes unavoidable sets
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58 Serg 15488 Fri Apr 27, 2012 6:44 am
chautygorcy View latest post
No new posts New canonization
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37 ChPicard 9965 Fri Apr 27, 2012 6:43 am
chautygorcy View latest post
No new posts There is no 16-clue sudoku: proof
8 Moschopulus 2765 Mon Apr 16, 2012 2:49 pm
coloin View latest post
No new posts Generating all sudokus with a given pattern
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38 ThemePark 7608 Sun Jan 08, 2012 9:56 pm
coloin View latest post
No new posts Lexicograhical Indexing
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38 Colin Fiat 7564 Thu Nov 10, 2011 6:50 am
dobrichev View latest post
No new posts This grid seems canonicalized
0 ChPicard 880 Sat Oct 29, 2011 10:56 am
ChPicard View latest post
No new posts 12 given pattern
6 ChPicard 1543 Thu Oct 20, 2011 1:54 pm
ChPicard View latest post
No new posts Minimum number of clues needed
6 kmin 8741 Wed Sep 14, 2011 11:02 am
Pat View latest post
No new posts Recognising Impossible Jigsaw Layouts
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56 mathimagics 11823 Mon May 23, 2011 2:41 pm
mathimagics View latest post
No new posts The CGDL (Jigsaw layout) Enumeration Problem
2 mathimagics 1235 Sun May 22, 2011 6:02 pm
mathimagics View latest post
No new posts Convergence Rate of Jacobson-Matthews RLS generator
2 mathimagics 1252 Tue May 17, 2011 5:57 am
mathimagics View latest post
No new posts NP-com proof
9 halon 2650 Thu May 12, 2011 9:35 am
blue View latest post
No new posts Random Grid Generation (Theory v Practice)
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39 mathimagics 9487 Sat May 07, 2011 5:25 am
mathimagics View latest post
No new posts Mathematical proof of non-uniqueness sudoku solution
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15 Serg 6290 Tue Apr 05, 2011 2:41 am
mrphantuan View latest post
No new posts Stats on bands and stacks
1 ChPicard 1247 Fri Mar 18, 2011 4:12 am
dobrichev View latest post
No new posts Unavoidable sets unique to the grid
6 dobrichev 3050 Mon Jan 24, 2011 5:02 am
blue View latest post
No new posts Adobe Open Source Dancing Links Implementation
8 MontagFTB 14090 Wed Jan 19, 2011 9:02 am
zionna View latest post
No new posts Unavoidable Sets: Definition, Properties, Classification
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41 dobrichev 10794 Sun Jan 16, 2011 8:17 am
Red Ed View latest post
No new posts A grid symmetry measure
0 dobrichev 1364 Thu Jan 13, 2011 11:50 pm
dobrichev View latest post
No new posts Grids with minimal UA18s for all 2-row,2-col,2-digit UA sets
6 blue 2317 Wed Jan 12, 2011 8:13 pm
dobrichev View latest post
No new posts The unexplored 40+ clue puzzle space
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30 dobrichev 9451 Tue Dec 21, 2010 12:52 pm
dobrichev View latest post
No new posts Are the 5472730538 essentially different grids available?
14 ChPicard 8109 Sat Dec 04, 2010 12:03 am
dobrichev View latest post
No new posts How to calculate number of pattern's automorphisms?
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117 Serg 25229 Mon Nov 08, 2010 1:38 pm
Serg View latest post
No new posts Name for two puzzles that have the same pattern of clues?
9 AR4793 3416 Tue Oct 19, 2010 7:06 am
Serg View latest post
No new posts Solution grids and UA connections
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17 blue 5567 Sun Oct 17, 2010 3:12 pm
Red Ed View latest post
No new posts Clue-pattern automorphisms ... manually
2 Red Ed 1612 Sun Oct 17, 2010 11:22 am
Red Ed View latest post
No new posts minimal puzzle size and isomorphism group
8 lkSudoku 2967 Mon Oct 11, 2010 11:31 pm
ronk View latest post
No new posts What is the Minlex form of the 416 minimal bands
13 AR4793 4496 Sun Oct 10, 2010 8:50 pm
dpbobelisk View latest post
No new posts generating random sudokugrids
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19 dukuso 34071 Sun Oct 10, 2010 6:40 am
Red Ed View latest post
No new posts Number of isomorphisms and solutions distribution
10 lkSudoku 3272 Wed Oct 06, 2010 6:52 am
AR4793 View latest post
No new posts The number of unique minimal puzzles?
7 AR4793 2728 Tue Oct 05, 2010 5:32 pm
AR4793 View latest post
No new posts Search for maximal pattern, containing both diagonals
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121 Serg 23018 Fri Sep 10, 2010 8:12 am
m_b_metcalf View latest post
No new posts Finding the nth sudoku solution?
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35 Beren 8832 Sun Aug 29, 2010 7:22 pm
Red Ed View latest post
No new posts Cycle Notation
3 BryanL 1759 Sun Aug 22, 2010 7:37 pm
daj95376 View latest post
No new posts Symmetric 17
6 ChPicard 2740 Fri Aug 13, 2010 6:23 am
Serg View latest post
No new posts Fertile pattern revisited
2 ChPicard 1581 Tue Aug 10, 2010 10:48 pm
coloin View latest post
No new posts sudokugrid is a gerechte design
4 dukuso 2164 Fri Jul 09, 2010 5:23 am
dukuso View latest post
No new posts signature of a sudoku
12 dukuso 4120 Tue Jun 22, 2010 7:49 pm
coloin View latest post
No new posts G, T, S classes, automorphism...
6 ChPicard 2469 Tue Jun 01, 2010 1:28 pm
gsf View latest post
No new posts some help with DLX and knuth's paper
6 furtivefelon 7444 Tue May 25, 2010 7:38 am
dukuso View latest post
No new posts Solving Sudoku's mathematically (?)
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15 Kamphuys 22497 Sun May 02, 2010 10:02 pm
SayuriSatsu View latest post
No new posts Backup: Minimal 39 clues puzzles
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17 eleven 7711 Sat May 01, 2010 7:18 am
eleven View latest post
No new posts Yet another mapping question
1 FlukeLogic 1804 Wed Feb 24, 2010 4:17 am
FlukeLogic View latest post
No new posts papers and links
4 dukuso 14691 Wed Nov 18, 2009 10:00 pm
evert2 View latest post
No new posts maximum number of candidates after removal singles
2 soduko 3042 Sat Jul 04, 2009 3:21 am
daj95376 View latest post
No new posts Mapping 3x3 boxes to rows
12 rkral 13979 Mon Jun 29, 2009 1:13 pm
leeo View latest post
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