Shakashaka


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Shakashaka (Proof of Quilt) is a logic puzzle with simple rules and challenging solutions.

The rules are simple. Shakashaka is played on a rectangular grid. The grid has both black cells and white cells in it.
The objective is to place black triangles in the white cell in such a way so that they form white rectangular (or square) areas.
- The triangles are right angled and occupy half of the white square divided diagonally.
- You can place triangles only in white cells
- The numbers in the black cells indicate how many triangles are adjacent, vertically and horizontally.
- The white rectangles can be either straight or rotated at 45°

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Shakashaka


5x5 Shakashaka | 10x10 Shakashaka | 15x15 Shakashaka | 20x20 Shakashaka | 25x25 Shakashaka

This Month
1. Daiwie
83
01:12.90
2. lmsc5k
62
01:42.97
3. 梦逍遥
64
01:51.76
4. geono
82
02:06.36
5. Kenolo353
89
02:17.12
6. 风间呓语
80
02:31.44
7. GoldChoco36
133
02:34.51
8. rambo00
31
03:09.11
9. AgnieszkaNesa
88
03:12.06
10. 3328037
43
03:15.58
11. randomflyintaco
102
03:24.66
12. aequidens
241
03:31.26
13. Board
73
03:32.67
14. heystonegalaxy
72
03:39.48
15. LesAM 03:52.53
16. Leeminseok
9
03:57.72
17. qobi
221
04:16.34
18. Gutenews
77
04:33.99
19. 이민석
1
04:42.66
20. ethereal7945 04:44.64
This Week
1. Daiwie
83
01:13.08
2. lmsc5k
62
01:42.97
3. 梦逍遥
64
02:01.56
4. geono
82
02:06.36
5. Kenolo353
89
02:19.51
6. GoldChoco36
133
02:41.53
7. rambo00
31
03:11.74
8. 3328037
43
03:35.55
9. aequidens
241
03:35.57
10. heystonegalaxy
72
04:07.08
11. qobi
221
04:16.34
12. 이민석
1
04:42.66
13. TQ-V85Sn
80
06:10.96
14. NanogramFreak 07:08.19
15. super2276 08:45.06
16. jdubs
133
08:53.61
17. JohnnyB 09:32.68
18. CLAVDIVS
50
10:53.02
19. Tezexlo
54
21:47.88
20.--- empty -----:--
Today
1. heystonegalaxy
72
05:55.48
2. qobi
221
06:50.25
3.--- empty -----:--
4.--- empty -----:--
5.--- empty -----:--
6.--- empty -----:--
7.--- empty -----:--
8.--- empty -----:--
9.--- empty -----:--
10.--- empty -----:--
11.--- empty -----:--
12.--- empty -----:--
13.--- empty -----:--
14.--- empty -----:--
15.--- empty -----:--
16.--- empty -----:--
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
MO3
1. Douglas Shamlin Jr.
685
01:01.56
2. Daiwie
83
01:16.89
3. home
180
01:35.44
4. Tunnel Keeper
62
01:36.37
5. numbrr
289
01:38.18
6. TashiroMiraki
214
01:40.69
7. GreyPotato
46
01:47.45
8. lmsc5k
62
01:48.77
9. vowels
214
01:50.31
10. 梦逍遥
64
01:51.48
AO5
1. Douglas Shamlin Jr.
685
01:01.56
2. Daiwie
83
01:18.66
3. Tunnel Keeper
62
01:37.18
4. home
180
01:38.22
5. TashiroMiraki
214
01:43.47
6. numbrr
289
01:48.68
7. GreyPotato
46
01:49.96
8. vowels
214
01:50.31
9. lmsc5k
62
01:52.55
10. 梦逍遥
64
01:53.89
AO12
1. Douglas Shamlin Jr.
685
01:05.53
2. Daiwie
83
01:22.49
3. home
180
01:42.74
4. Tunnel Keeper
62
01:45.85
5. TashiroMiraki
214
01:48.06
6. numbrr
289
01:54.77
7. 梦逍遥
64
01:58.43
8. GreyPotato
46
01:59.04
9. vowels
214
01:59.93
10. lmsc5k
62
02:00.44
Robots / programmatic solversinfo  
1.kanaderu
1
04:55.008
2.Kx1WillTill2:29:56.870
3.--- empty -----:--

* MO3 - Mean of 3. The average of 3 consecutive times.
AO5 - Average of 5. The average of 5 consecutive times ignoring the highest and the lowest.
AO12 - Average of 12. The average of 12 consecutive times ignoring the highest and the lowest.
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2025-04-30 08:29:33

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