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- Puzzle collections sorted by solving qualities
by tso » Thu Aug 03, 2006 5:38 pm - 14 Replies
- 25374 Views
- Last post by denis_berthier
Fri Sep 08, 2023 4:39 am
- Puzzle collections sorted by solving qualities
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- List of Acronyms
by Wecoc » Tue Jan 21, 2020 11:18 pm - 10 Replies
- 3153 Views
- Last post by denis_berthier
Fri Mar 04, 2022 7:24 am
- List of Acronyms
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- Sudokus of Shame
1 ... 4, 5, 6
by Moschopulus » Thu Feb 02, 2006 1:19 am
- 86 Replies
- 84798 Views
- Last post by enxio27
Tue Dec 11, 2018 2:53 pm
- Sudokus of Shame
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- SudoRules
by Yogi » Thu Sep 07, 2023 10:36 am - 3 Replies
- 73 Views
- Last post by denis_berthier
Sat Sep 16, 2023 2:47 am
- SudoRules
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- T&E(3) Puzzles (split from "hardest sudokus" thread)
1, 2by mith » Mon Nov 07, 2022 7:24 pm - 27 Replies
- 1434 Views
- Last post by Paquita
Fri Sep 15, 2023 2:20 pm
- T&E(3) Puzzles (split from "hardest sudokus" thread)
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- PIPs (Pseudo-Independent Positions)
by JP_BENTZ » Sat Sep 02, 2023 12:37 pm - 10 Replies
- 206 Views
- Last post by JP_BENTZ
Fri Sep 08, 2023 11:49 am
- PIPs (Pseudo-Independent Positions)
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- The BpB classification of T&E(2) puzzles
by denis_berthier » Thu Sep 07, 2023 12:10 pm - 3 Replies
- 107 Views
- Last post by denis_berthier
Fri Sep 08, 2023 6:36 am
- The BpB classification of T&E(2) puzzles
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- Best Sudoku app for iPad
by BamaFan » Wed Aug 30, 2023 1:51 pm - 0 Replies
- 30 Views
- Last post by BamaFan
Wed Aug 30, 2023 1:51 pm
- Best Sudoku app for iPad
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- remove one clue
by urhegyi » Thu Aug 24, 2023 6:02 pm - 2 Replies
- 80 Views
- Last post by m_b_metcalf
Fri Aug 25, 2023 9:52 am
- remove one clue
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- from MSP to SSP
by P.O. » Thu Aug 24, 2023 5:34 pm - 0 Replies
- 53 Views
- Last post by P.O.
Thu Aug 24, 2023 5:34 pm
- from MSP to SSP
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- What is rule behind it
by kurbads » Thu Aug 10, 2023 12:29 pm - 6 Replies
- 137 Views
- Last post by StrmCkr
Fri Aug 11, 2023 10:02 pm
- What is rule behind it
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- M-wings & m-rings: exemplars & examples
1, 2by ronk » Tue May 25, 2010 9:38 pm - 26 Replies
- 5294 Views
- Last post by StrmCkr
Tue Aug 01, 2023 4:52 pm
- M-wings & m-rings: exemplars & examples
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- Sudoku "scores" & complexity
by senecan » Mon Jul 03, 2023 11:33 am - 1 Replies
- 134 Views
- Last post by denis_berthier
Wed Jul 19, 2023 6:25 am
- Sudoku "scores" & complexity
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- Some help for a newbie with a simple game code?
by rusllrd » Wed Apr 05, 2023 10:03 am - 2 Replies
- 287 Views
- Last post by gulshan212
Tue Jul 18, 2023 2:13 pm
- Some help for a newbie with a simple game code?
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- Maximal invalid patterns with the fewest number of clues.
1, 2by JPF » Fri Jun 23, 2023 8:40 pm - 19 Replies
- 497 Views
- Last post by JPF
Sat Jul 08, 2023 9:58 pm
- Maximal invalid patterns with the fewest number of clues.
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- Minimal patterns
1, 2by Serg » Fri Oct 10, 2014 7:14 am - 15 Replies
- 1615 Views
- Last post by Serg
Sat Jul 08, 2023 3:33 pm
- Minimal patterns
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- What am I not seeing???
by groston » Thu Jun 29, 2023 9:11 pm - 2 Replies
- 103 Views
- Last post by groston
Fri Jun 30, 2023 4:07 am
- What am I not seeing???
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- Impossible situations?
by Maq777 » Wed Jun 07, 2023 1:28 am - 9 Replies
- 353 Views
- Last post by Maq777
Sun Jun 25, 2023 1:30 pm
- Impossible situations?
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- how many components?
by P.O. » Fri May 19, 2023 6:21 pm - 7 Replies
- 249 Views
- Last post by sudokuvalleyvenusrye
Fri Jun 23, 2023 9:28 pm
- how many components?
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- Killer Sudoku - am I missing something?
by groston » Sun Jun 18, 2023 4:28 pm - 2 Replies
- 103 Views
- Last post by groston
Sun Jun 18, 2023 7:56 pm
- Killer Sudoku - am I missing something?
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- Hidden Candidates for Dummies
by Trocksmore » Sun Jun 04, 2023 4:14 pm - 3 Replies
- 166 Views
- Last post by DonM
Fri Jun 16, 2023 7:46 pm
- Hidden Candidates for Dummies
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- Unique Sudokus (Russell & Jarvis)
1, 2, 3by Mathimagics » Wed Jan 10, 2018 10:42 pm - 35 Replies
- 3681 Views
- Last post by Sojourner9
Fri Jun 16, 2023 6:13 pm
- Unique Sudokus (Russell & Jarvis)
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- XYZ wing notation
by Hajime » Wed Jun 14, 2023 11:55 am - 1 Replies
- 92 Views
- Last post by Leren
Wed Jun 14, 2023 8:45 pm
- XYZ wing notation
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- hamiltonian path
by P.O. » Wed May 24, 2023 6:32 pm - 13 Replies
- 361 Views
- Last post by P.O.
Thu Jun 01, 2023 9:50 am
- hamiltonian path
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- morphs or not?
by urhegyi » Tue Apr 25, 2023 8:41 pm - 9 Replies
- 349 Views
- Last post by Serg
Thu Apr 27, 2023 3:27 pm
- morphs or not?
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- Sudoku Explainer
1, 2, 3by Yogi » Fri Mar 18, 2022 8:10 pm - 30 Replies
- 1816 Views
- Last post by hendrik_monard
Wed Apr 19, 2023 8:08 pm
- Sudoku Explainer
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- 2 x-wings, 3 xy-wings, 1 xyz-wing in the same puzzle
by urhegyi » Sun Apr 16, 2023 9:59 pm - 2 Replies
- 171 Views
- Last post by Leren
Mon Apr 17, 2023 1:08 am
- 2 x-wings, 3 xy-wings, 1 xyz-wing in the same puzzle
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- same puzzle 1 clue moved much harder
by urhegyi » Wed Apr 12, 2023 3:29 pm - 8 Replies
- 313 Views
- Last post by eleven
Fri Apr 14, 2023 7:41 pm
- same puzzle 1 clue moved much harder
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- 17 digit puzzles
by warrentrammell » Fri Oct 21, 2022 6:04 pm - 7 Replies
- 499 Views
- Last post by faskversi
Thu Apr 13, 2023 6:54 am
- 17 digit puzzles
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- 18 clue classic sudoku
by urhegyi » Sun Apr 09, 2023 1:55 pm - 4 Replies
- 280 Views
- Last post by coloin
Tue Apr 11, 2023 2:01 pm
- 18 clue classic sudoku
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- k-regular puzzles
by JPF » Wed Apr 05, 2023 2:55 pm - 8 Replies
- 299 Views
- Last post by marek stefanik
Sun Apr 09, 2023 5:07 pm
- k-regular puzzles
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- Pandora Cube / Не Так С&
by JacobTheby » Mon Mar 27, 2023 5:42 pm - 0 Replies
- 159 Views
- Last post by JacobTheby
Mon Mar 27, 2023 5:42 pm
- Pandora Cube / Не Так С&
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- Max size of impossible 3-digit pattern
by denis_berthier » Sun Mar 12, 2023 4:08 am - 1 Replies
- 219 Views
- Last post by denis_berthier
Fri Mar 17, 2023 6:53 am
- Max size of impossible 3-digit pattern
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- Puzzles needing lots of locked candidates
1, 2, 3, 4, 5by 999_Springs » Sun Apr 15, 2007 3:17 pm - 62 Replies
- 28202 Views
- Last post by Pat
Tue Mar 07, 2023 6:06 pm
- Puzzles needing lots of locked candidates
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- 17 clue puzzles
1, 2by Pupp » Fri Sep 17, 2021 3:52 am - 21 Replies
- 1257 Views
- Last post by eleven
Tue Mar 07, 2023 11:51 am
- 17 clue puzzles
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