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
100
01:05.21
2. home
209
01:21.29
3. marbleeeee 01:37.27
4. CFan058
17
01:39.35
5. Tunnel Keeper
70
01:40.80
6. Kenolo353
122
01:46.78
7. sauceguardian
105
01:58.00
8. rinny 02:27.18
9. YoungNam 02:45.06
10. RaiT
106
03:25.68
11. Gorgonseye 03:25.93
12. aequidens
265
03:27.53
13. Hybrid
177
03:34.25
14. AnonyMinor
79
03:34.82
15. Coolcon
90
03:38.81
16. ethanguo 03:39.71
17. knmidorika
58
03:47.44
18. qobi
235
04:07.11
19. WYJ
68
04:13.71
20. FishingPanda 04:15.06
This Week
1. Daiwie
100
01:05.21
2. marbleeeee 01:37.27
3. Kenolo353
122
01:49.96
4. rinny 02:30.35
5. YoungNam 02:45.06
6. Gorgonseye 03:37.97
7. ethanguo 03:39.71
8. WYJ
68
04:13.71
9. FishingPanda 04:15.06
10. iamagenius320
1
04:32.24
11. knmidorika
58
04:34.48
12. SLinkTechInc 04:49.30
13. Tezexlo
67
05:11.51
14. NanogramFreak 05:43.38
15. Ontwikseltsaar
103
06:01.06
16. sqw0tb7zc
17
06:40.19
17. super2276 06:51.66
18. redcatdragon 07:19.32
19. AKoolKat 13:19.14
20.--- empty -----:--
Today
1. Daiwie
100
01:19.42
2. Kenolo353
122
02:08.92
3. SLinkTechInc 04:49.30
4. Tezexlo
67
05:14.37
5. WYJ
68
07:00.87
6. redcatdragon 09:06.88
7. AKoolKat 13:19.14
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.
719
01:01.56
2. Daiwie
100
01:10.49
3. home
209
01:20.85
4. Tunnel Keeper
70
01:36.37
5. numbrr
314
01:38.18
6. TashiroMiraki
224
01:40.69
7. 梦逍遥
74
01:42.04
8. lmsc5k
67
01:46.18
9. CFan058
17
01:46.52
10. GreyPotato
46
01:47.45
AO5
1. Douglas Shamlin Jr.
719
01:01.56
2. Daiwie
100
01:11.18
3. home
209
01:22.83
4. Tunnel Keeper
70
01:37.18
5. TashiroMiraki
224
01:43.47
6. 梦逍遥
74
01:44.40
7. numbrr
314
01:48.68
8. CFan058
17
01:49.31
9. GreyPotato
46
01:49.96
10. vowels
216
01:50.31
AO12
1. Douglas Shamlin Jr.
719
01:05.53
2. Daiwie
100
01:12.62
3. home
209
01:26.41
4. Tunnel Keeper
70
01:45.85
5. TashiroMiraki
224
01:48.06
6. 梦逍遥
74
01:49.64
7. CFan058
17
01:53.89
8. numbrr
314
01:54.77
9. GreyPotato
46
01:59.04
10. lmsc5k
67
01:59.71
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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