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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
- 566 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
- 899 Views
- Last post by eleven
Fri Apr 14, 2023 7:41 pm
- same puzzle 1 clue moved much harder
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- 18 clue classic sudoku
by urhegyi » Sun Apr 09, 2023 1:55 pm - 4 Replies
- 644 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
- 795 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
- 519 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
- 571 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
- 31009 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
- 2261 Views
- Last post by eleven
Tue Mar 07, 2023 11:51 am
- 17 clue puzzles
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- Low/Hi Clue Thresholds
1 ... 15, 16, 17
by Mathimagics » Wed Jun 26, 2019 2:56 am
- 253 Replies
- 27668 Views
- Last post by champagne
Thu Feb 23, 2023 8:06 am
- Low/Hi Clue Thresholds
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- Two ways Sudoku is being played
by BullHorn » Sat Feb 11, 2023 4:56 pm - 6 Replies
- 1085 Views
- Last post by Yogi
Mon Feb 20, 2023 7:43 pm
- Two ways Sudoku is being played
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- Pattern-proper puzzles
by tdillon » Mon Jan 16, 2023 1:53 am - 8 Replies
- 1447 Views
- Last post by tdillon
Thu Jan 19, 2023 7:21 pm
- Pattern-proper puzzles
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- mahematics
1, 2by chi » Tue Jan 10, 2023 7:49 pm - 17 Replies
- 1456 Views
- Last post by Leren
Sat Jan 14, 2023 2:49 am
- mahematics
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- More Homework 7
1, 2by JPF » Wed Dec 07, 2022 4:49 pm - 18 Replies
- 1611 Views
- Last post by coloin
Wed Dec 14, 2022 1:27 pm
- More Homework 7
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- 19 CLUE SUDOKU WORKOUT
by coloin » Mon Dec 12, 2022 10:57 am - 8 Replies
- 714 Views
- Last post by coloin
Wed Dec 14, 2022 12:51 pm
- 19 CLUE SUDOKU WORKOUT
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- MonoCyclic Grids
1, 2by Mathimagics » Tue Jul 05, 2022 2:32 pm - 23 Replies
- 2119 Views
- Last post by coloin
Mon Dec 12, 2022 11:13 am
- MonoCyclic Grids
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- T&E(2) patterns and puzzles
by denis_berthier » Mon Nov 28, 2022 7:16 am - 5 Replies
- 829 Views
- Last post by denis_berthier
Mon Dec 05, 2022 4:56 am
- T&E(2) patterns and puzzles
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- More Homework 6
1, 2by JPF » Wed Nov 23, 2022 11:34 pm - 29 Replies
- 1648 Views
- Last post by JPF
Sat Dec 03, 2022 10:30 pm
- More Homework 6
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- More Homework 5
1, 2by JPF » Mon Nov 14, 2022 12:25 pm - 20 Replies
- 1378 Views
- Last post by JPF
Sat Nov 19, 2022 12:50 pm
- More Homework 5
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- More Homework 4
1, 2by JPF » Fri Nov 11, 2022 10:55 am - 17 Replies
- 1307 Views
- Last post by blue
Sun Nov 13, 2022 9:57 pm
- More Homework 4
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- Two equal boxes
by GouinJP » Sat Oct 29, 2022 1:00 pm - 13 Replies
- 881 Views
- Last post by JPF
Sun Nov 06, 2022 10:08 am
- Two equal boxes
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- Maximum number of clues for a given SE rating
1 ... 8, 9, 10by 999_Springs » Thu Jul 24, 2008 4:10 pm - 142 Replies
- 35847 Views
- Last post by mith
Tue Nov 01, 2022 5:58 pm
- Maximum number of clues for a given SE rating
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- Relation between difficulty and number of candidates
by denis_berthier » Mon Feb 28, 2022 5:43 am - 4 Replies
- 1146 Views
- Last post by denis_berthier
Wed Aug 31, 2022 7:02 am
- Relation between difficulty and number of candidates
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- Multiple Solutions
by FrankD » Tue Aug 23, 2022 6:42 pm - 4 Replies
- 686 Views
- Last post by FrankD
Thu Aug 25, 2022 3:57 pm
- Multiple Solutions
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- History of AIC's
by RSW » Wed Jun 22, 2022 11:06 pm - 8 Replies
- 1040 Views
- Last post by denis_berthier
Tue Aug 09, 2022 3:30 am
- History of AIC's
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- Puzzles with clues in diagonal boxes
by coloin » Tue Jun 28, 2022 9:18 pm - 12 Replies
- 1224 Views
- Last post by coloin
Mon Jul 04, 2022 11:02 pm
- Puzzles with clues in diagonal boxes
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- Bruteforce meaning
by BamaFan » Wed Jun 08, 2022 11:18 pm - 2 Replies
- 770 Views
- Last post by Mathimagics
Thu Jun 09, 2022 2:08 am
- Bruteforce meaning
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- Sudoku Professor
by qprfan99 » Sat May 21, 2022 1:32 am - 2 Replies
- 861 Views
- Last post by qprfan99
Wed Jun 01, 2022 5:49 am
- Sudoku Professor
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- Website that allows you to enter a puzzle
by qprfan99 » Thu May 12, 2022 11:34 pm - 4 Replies
- 808 Views
- Last post by qprfan99
Wed Jun 01, 2022 5:47 am
- Website that allows you to enter a puzzle
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- Sudoku App with solving technique
by gjjlfz » Tue May 10, 2022 5:21 am - 0 Replies
- 649 Views
- Last post by gjjlfz
Tue May 10, 2022 5:21 am
- Sudoku App with solving technique
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- 17-clue symmetric puzzles
by m_b_metcalf » Fri May 06, 2022 8:36 am - 4 Replies
- 738 Views
- Last post by m_b_metcalf
Mon May 09, 2022 2:48 pm
- 17-clue symmetric puzzles
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- The best symmetry
1, 2by JPF » Tue Dec 11, 2007 12:36 am - 29 Replies
- 6847 Views
- Last post by m_b_metcalf
Mon May 09, 2022 9:44 am
- The best symmetry
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- Looking for some very very very hard sudoku
1, 2, 3, 4, 5by p0486 » Sat Mar 18, 2006 1:36 pm - 60 Replies
- 45444 Views
- Last post by International_DBA
Sat Apr 30, 2022 10:04 am
- Looking for some very very very hard sudoku
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- Unfilled boxes, but puzzle already solved?
by flycaster » Tue Apr 26, 2022 4:28 pm - 11 Replies
- 951 Views
- Last post by flycaster
Fri Apr 29, 2022 10:50 pm
- Unfilled boxes, but puzzle already solved?
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- Glossary, terms, etc
by Wepwawet » Sun Apr 10, 2022 4:54 pm - 3 Replies
- 718 Views
- Last post by Wepwawet
Tue Apr 19, 2022 12:02 am
- Glossary, terms, etc
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- Elimination of Candidates vs Sudoku Rating
by AnotherLife » Thu Apr 14, 2022 5:31 pm - 5 Replies
- 879 Views
- Last post by AnotherLife
Fri Apr 15, 2022 8:12 pm
- Elimination of Candidates vs Sudoku Rating
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