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°

Video Tutorial
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Shakashaka


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

New Puzzle
This Month
1. Daiwie
102
01:04.58
2. home
215
01:14.66
3. marbleeeee 01:18.69
4. CFan058
33
01:29.41
5. sauceguardian
108
01:41.35
6. lmsc5k
68
01:53.73
7. Kenolo353
123
01:57.72
8. shiningyang
17
02:29.08
9. Dorice
270
02:58.94
10. SLinkTechInc
15
03:01.38
11. Nazrei
80
03:03.59
12. WYJ
90
03:07.59
13. aequidens
269
03:10.65
14. AnonyMinor
85
03:11.82
15. FishingPanda 03:19.03
16. Gorgonseye 03:30.51
17. qobi
238
03:38.84
18. ethan1021
15
03:53.97
19. Lin Wanxin
77
04:02.86
20. Tezexlo
69
04:13.82
This Week
1. Daiwie
102
01:09.85
2. marbleeeee 01:24.04
3. CFan058
33
01:29.41
4. Kenolo353
123
02:22.63
5. SLinkTechInc
15
03:01.38
6. AnonyMinor
85
03:11.82
7. shiningyang
17
03:21.18
8. Dorice
270
03:27.72
9. Gorgonseye 03:39.89
10. FishingPanda 03:45.91
11. WYJ
90
03:45.95
12. aequidens
269
03:46.23
13. ethan1021
15
03:53.97
14. qobi
238
04:04.42
15. afidaleo
134
04:29.18
16. Tezexlo
69
05:04.71
17. redcatdragon 07:44.76
18. mart0o
71
08:19.93
19. Ontwikseltsaar
104
08:27.19
20. coleslaw
19
12:56.32
Today
1. Daiwie
102
01:16.83
2. AnonyMinor
85
03:11.82
3. qobi
238
04:04.42
4. Tezexlo
69
05:04.71
5. redcatdragon 11:32.85
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.
721
01:01.56
2. Daiwie
102
01:10.49
3. home
215
01:20.01
4. Tunnel Keeper
71
01:36.37
5. numbrr
321
01:38.18
6. TashiroMiraki
228
01:40.69
7. CFan058
33
01:41.66
8. 梦逍遥
74
01:42.04
9. lmsc5k
68
01:46.18
10. GreyPotato
46
01:47.45
AO5
1. Douglas Shamlin Jr.
721
01:01.56
2. Daiwie
102
01:11.18
3. home
215
01:21.65
4. Tunnel Keeper
71
01:37.18
5. TashiroMiraki
228
01:43.47
6. 梦逍遥
74
01:44.40
7. CFan058
33
01:46.18
8. numbrr
321
01:48.68
9. sauceguardian
108
01:49.72
10. GreyPotato
46
01:49.96
AO12
1. Douglas Shamlin Jr.
721
01:05.53
2. Daiwie
102
01:12.62
3. home
215
01:26.41
4. Tunnel Keeper
71
01:45.85
5. TashiroMiraki
228
01:48.06
6. 梦逍遥
74
01:49.64
7. CFan058
33
01:52.18
8. numbrr
321
01:54.77
9. sauceguardian
108
01:54.82
10. GreyPotato
46
01:59.04
Robots / programmatic solversinfo  
1.SATBot00:18.151
2.Paul Bismuth
1
00:23.304
3.kanaderu
1
04:55.008

* 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.
You need to be logged in to track your averages

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