Sudoku variants
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- hardest 6x6 sudoku-x?
by 1to9only » Fri Jan 17, 2025 3:17 pm - 6 Replies
- 84 Views
- Last post by philvo
Mon Jan 20, 2025 3:26 pm
- hardest 6x6 sudoku-x?
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- SudokuX (Diagonal Sudoku)
1 ... 4, 5, 6by Mathimagics » Fri Aug 03, 2018 6:17 pm - 89 Replies
- 12350 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
- 206 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
- 3520 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
- 4067 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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- X-sudoku for dogged human solvers
1, 2, 3by m_b_metcalf » Mon Oct 03, 2022 5:21 pm - 32 Replies
- 1506 Views
- Last post by m_b_metcalf
Fri Nov 22, 2024 10:03 am
- X-sudoku for dogged human solvers
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- 13-clue Sudoku X
1, 2, 3, 4by gfroyle » Sat Dec 31, 2005 11:11 am - 49 Replies
- 31501 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
- 764 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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- giant sudokus
1 ... 5, 6, 7by philvo » Fri Jan 21, 2022 8:25 am - 104 Replies
- 6295 Views
- Last post by denis_berthier
Wed Oct 09, 2024 9:03 am
- giant sudokus
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- Symmetric 12-clue x-sudokus
by m_b_metcalf » Fri Aug 30, 2024 3:59 pm - 5 Replies
- 269 Views
- Last post by Leren
Fri Sep 27, 2024 10:53 pm
- Symmetric 12-clue x-sudokus
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- Other Rainbow Puzzles
by HATMAN » Sat Mar 23, 2024 11:41 pm - 1 Replies
- 312 Views
- Last post by HATMAN
Wed Jul 31, 2024 7:40 pm
- Other Rainbow Puzzles
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- X-Quintuple
by m_b_metcalf » Sun Jun 30, 2024 5:40 pm - 2 Replies
- 228 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
- 1370 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
- 385 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
- 474 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
- 197 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
- 880 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
- 323 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
- 222 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
- 302 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
- 323 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
- 324 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
- 1237 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
- 249 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
- 333 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
- 297 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
- 484 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
- 227 Views
- Last post by HATMAN
Fri Dec 15, 2023 11:14 am
- Rainbow Vanilla SS 11
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- A little puzzle (X-sudoku)
by m_b_metcalf » Fri Dec 08, 2023 7:31 pm - 2 Replies
- 344 Views
- Last post by m_b_metcalf
Sat Dec 09, 2023 9:20 am
- A little puzzle (X-sudoku)
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- Rainbow Killer 7 PS
by HATMAN » Fri Dec 01, 2023 2:32 pm - 0 Replies
- 259 Views
- Last post by HATMAN
Fri Dec 01, 2023 2:32 pm
- Rainbow Killer 7 PS
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- Square Wisdom 23-01
by HATMAN » Thu Nov 30, 2023 8:58 am - 0 Replies
- 264 Views
- Last post by HATMAN
Thu Nov 30, 2023 8:58 am
- Square Wisdom 23-01
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- Rainbow Killer 6
by HATMAN » Sun Nov 19, 2023 8:12 am - 0 Replies
- 242 Views
- Last post by HATMAN
Sun Nov 19, 2023 8:12 am
- Rainbow Killer 6
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- 8x8 grid (No region restrictions) with Knights move variant.
by lonogod » Sun Nov 05, 2023 11:32 pm - 5 Replies
- 423 Views
- Last post by lonogod
Wed Nov 15, 2023 11:50 am
- 8x8 grid (No region restrictions) with Knights move variant.
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- Halloween Sudoku
by urhegyi » Fri Oct 16, 2020 5:59 pm
- 10 Replies
- 1175 Views
- Last post by Hajime
Mon Oct 23, 2023 12:35 pm
- Halloween Sudoku
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- Rainbow Killer 5
by HATMAN » Wed Oct 18, 2023 5:15 am - 0 Replies
- 275 Views
- Last post by HATMAN
Wed Oct 18, 2023 5:15 am
- Rainbow Killer 5
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- self designed jigsaw sudoku
by urhegyi » Wed Oct 11, 2023 10:48 pm - 1 Replies
- 343 Views
- Last post by Hajime
Thu Oct 12, 2023 7:51 am
- self designed jigsaw sudoku
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- 16x16 windoku
by urhegyi » Sun Nov 28, 2021 4:58 am - 4 Replies
- 894 Views
- Last post by Hajime
Sat Oct 07, 2023 7:35 am
- 16x16 windoku
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- Rainbow Killer 4
by HATMAN » Tue Sep 26, 2023 11:42 am - 4 Replies
- 395 Views
- Last post by HATMAN
Wed Oct 04, 2023 7:16 am
- Rainbow Killer 4
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