Sudoku variants
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- Gattai-4
by Hajime » Wed Jan 28, 2026 6:12 pm - 2 Replies
- 59 Views
- Last post by m_b_metcalf
Thu Jan 29, 2026 4:27 pm
- Gattai-4
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- X-sudoku for dogged human solvers
1, 2, 3, 4by m_b_metcalf » Mon Oct 03, 2022 5:21 pm - 46 Replies
- 4014 Views
- Last post by m_b_metcalf
Mon Jan 12, 2026 11:01 am
- X-sudoku for dogged human solvers
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- Alphabet Xoup: Q
1, 2by m_b_metcalf » Wed Mar 08, 2023 8:33 am - 15 Replies
- 1943 Views
- Last post by m_b_metcalf
Thu Oct 09, 2025 3:25 pm
- Alphabet Xoup: Q
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- Windoku for dogged human solvers
by Hajime » Thu Jun 12, 2025 10:11 am - 7 Replies
- 3043 Views
- Last post by Hajime
Thu Jul 10, 2025 10:35 am
- Windoku for dogged human solvers
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- Other Rainbow Puzzles
by HATMAN » Sat Mar 23, 2024 11:41 pm - 2 Replies
- 3077 Views
- Last post by HATMAN
Mon Jun 23, 2025 3:23 pm
- Other Rainbow Puzzles
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- circular arrow sudoku
by urhegyi » Wed Apr 09, 2025 8:38 pm - 1 Replies
- 2779 Views
- Last post by creint
Thu Apr 10, 2025 9:37 am
- circular arrow sudoku
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- Introducing Baxoku jigsaw Puzzle
by basscom4life » Mon Feb 10, 2025 9:03 pm - 1 Replies
- 2836 Views
- Last post by 1to9only
Wed Mar 26, 2025 11:12 am
- Introducing Baxoku jigsaw Puzzle
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- Baxoku Sudoku with Triangular Boxes ($5 for first solver)
by basscom4life » Tue Feb 04, 2025 10:03 pm - 2 Replies
- 2780 Views
- Last post by 1to9only
Tue Mar 25, 2025 2:18 pm
- Baxoku Sudoku with Triangular Boxes ($5 for first solver)
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- Introducing Baxoku sudoku
1, 2by basscom4life » Mon Feb 03, 2025 7:08 pm - 20 Replies
- 6734 Views
- Last post by 1to9only
Tue Mar 18, 2025 10:55 am
- Introducing Baxoku sudoku
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- hardest 6x6 sudoku-x?
by 1to9only » Fri Jan 17, 2025 3:17 pm - 9 Replies
- 3556 Views
- Last post by 1to9only
Sat Mar 08, 2025 2:56 pm
- hardest 6x6 sudoku-x?
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- Valentine 2025 (SudokuX)
by Hajime » Sun Feb 09, 2025 2:53 pm - 2 Replies
- 2807 Views
- Last post by m_b_metcalf
Mon Feb 10, 2025 2:58 pm
- Valentine 2025 (SudokuX)
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- Sudoku-X puzzle can be solved without pencilmark
by jco » Fri Jan 31, 2025 7:38 pm - 0 Replies
- 2853 Views
- Last post by jco
Fri Jan 31, 2025 7:38 pm
- Sudoku-X puzzle can be solved without pencilmark
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- SudokuX (Diagonal Sudoku)
1 ... 4, 5, 6by Mathimagics » Fri Aug 03, 2018 6:17 pm - 89 Replies
- 30430 Views
- Last post by philvo
Fri Jan 17, 2025 2:16 pm
- SudokuX (Diagonal Sudoku)
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- Twin-4 easy or not?
by Hajime » Thu Dec 19, 2024 7:25 pm - 12 Replies
- 3551 Views
- Last post by Hajime
Fri Jan 03, 2025 2:59 pm
- Twin-4 easy or not?
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- X-samurai
by m_b_metcalf » Mon Sep 17, 2007 7:50 pm
- 13 Replies
- 6757 Views
- Last post by creint
Thu Jan 02, 2025 6:27 pm
- X-samurai
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- Black Hole (a 32x32 compound of 16x16 X-sudokus)
1, 2, 3, 4 by m_b_metcalf » Tue Apr 16, 2019 8:05 am
- 45 Replies
- 16901 Views
- Last post by Hajime
Mon Dec 09, 2024 12:04 pm
- Black Hole (a 32x32 compound of 16x16 X-sudokus)
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- 13-clue Sudoku X
1, 2, 3, 4by gfroyle » Sat Dec 31, 2005 11:11 am - 49 Replies
- 46003 Views
- Last post by m_b_metcalf
Tue Nov 12, 2024 11:10 am
- 13-clue Sudoku X
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- [Exact Cover]killer sudoku cage without sum,How to convert ?
by dyguests » Sun Aug 22, 2021 9:36 am - 3 Replies
- 3484 Views
- Last post by dyguests
Fri Oct 25, 2024 8:41 am
- [Exact Cover]killer sudoku cage without sum,How to convert ?
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- Symmetric 12-clue x-sudokus
by m_b_metcalf » Fri Aug 30, 2024 3:59 pm - 5 Replies
- 3056 Views
- Last post by Leren
Fri Sep 27, 2024 10:53 pm
- Symmetric 12-clue x-sudokus
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- X-Quintuple
by m_b_metcalf » Sun Jun 30, 2024 5:40 pm - 2 Replies
- 3006 Views
- Last post by Hajime
Fri Jul 05, 2024 7:56 am
- X-Quintuple
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- X-SamuraiPlus
1, 2 by Hajime » Fri Apr 28, 2023 10:45 am
- 26 Replies
- 8443 Views
- Last post by m_b_metcalf
Tue Jun 04, 2024 1:33 pm
- X-SamuraiPlus
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- Killer Primes
by StrmCkr » Sun Apr 28, 2024 5:37 am - 3 Replies
- 3210 Views
- Last post by StrmCkr
Mon May 27, 2024 9:30 pm
- Killer Primes
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- 16x16, very hard/very easy
by m_b_metcalf » Thu Apr 04, 2024 7:54 pm
- 9 Replies
- 3474 Views
- Last post by denis_berthier
Mon Apr 22, 2024 5:03 am
- 16x16, very hard/very easy
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- Rain V SS + 13
by HATMAN » Wed Apr 10, 2024 5:56 pm - 0 Replies
- 2842 Views
- Last post by HATMAN
Wed Apr 10, 2024 5:56 pm
- Rain V SS + 13
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- Is It Possible To Put Sudoku On Rubik Cube Like This?
1, 2by Albania » Wed Mar 13, 2024 4:39 pm - 18 Replies
- 7383 Views
- Last post by Hajime
Fri Mar 22, 2024 10:56 am
- Is It Possible To Put Sudoku On Rubik Cube Like This?
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- Stuck on a puzzle
by Fortesque92 » Mon Mar 18, 2024 2:54 am - 4 Replies
- 3248 Views
- Last post by creint
Wed Mar 20, 2024 10:43 pm
- Stuck on a puzzle
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- Rainbow Killers 12 Onwards
by HATMAN » Sat Mar 09, 2024 11:00 am - 1 Replies
- 2890 Views
- Last post by HATMAN
Sat Mar 09, 2024 11:06 am
- Rainbow Killers 12 Onwards
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- A new approach for generating jigsaws
by urhegyi » Sun Mar 03, 2024 9:31 am - 2 Replies
- 3014 Views
- Last post by Hajime
Fri Mar 08, 2024 6:16 pm
- A new approach for generating jigsaws
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- X curiosity
by m_b_metcalf » Tue Feb 27, 2024 11:54 am - 4 Replies
- 3113 Views
- Last post by HATMAN
Thu Mar 07, 2024 7:51 am
- X curiosity
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- too hard this variant?
by urhegyi » Mon Feb 26, 2024 9:59 am - 4 Replies
- 3060 Views
- Last post by Hajime
Fri Mar 01, 2024 3:09 pm
- too hard this variant?
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- Valentine 2019
by Hajime » Mon Feb 11, 2019 11:50 am - 5 Replies
- 4108 Views
- Last post by Hajime
Wed Feb 14, 2024 6:38 pm
- Valentine 2019
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- SuLingo Rain V SS X W 18
by HATMAN » Mon Feb 12, 2024 8:38 am - 0 Replies
- 2934 Views
- Last post by HATMAN
Mon Feb 12, 2024 8:38 am
- SuLingo Rain V SS X W 18
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- Rainbow Killer 8 and KiMo 8
by HATMAN » Mon Jan 08, 2024 8:53 am - 2 Replies
- 3156 Views
- Last post by HATMAN
Mon Feb 12, 2024 7:53 am
- Rainbow Killer 8 and KiMo 8
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- KiMo X W 24-1
by HATMAN » Fri Jan 12, 2024 3:23 pm - 2 Replies
- 2544 Views
- Last post by HATMAN
Wed Jan 17, 2024 9:06 am
- KiMo X W 24-1
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- wordzuka by Evan Whitney
by urhegyi » Tue Dec 19, 2023 9:27 pm - 8 Replies
- 2911 Views
- Last post by Leren
Thu Dec 21, 2023 7:37 pm
- wordzuka by Evan Whitney
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- Rainbow Vanilla SS 11
by HATMAN » Fri Dec 15, 2023 11:14 am - 0 Replies
- 2389 Views
- Last post by HATMAN
Fri Dec 15, 2023 11:14 am
- Rainbow Vanilla SS 11
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