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
88
01:10.00
2. home
192
01:26.41
3. Tunnel Keeper
63
01:50.09
4. lmsc5k
63
01:56.96
5. Kenolo353
106
02:11.46
6. sauceguardian
99
02:12.26
7. randomflyintaco
114
02:57.69
8. Dorice
244
03:17.23
9. nealinco
187
03:18.83
10. 梦逍遥
68
03:23.46
11. LesAM 03:29.65
12. aequidens
250
03:37.65
13. heystonegalaxy
79
03:39.53
14. Frog The Toast
65
03:41.21
15. qobi
229
03:58.93
16. 喵緹
31
04:07.12
17. HerrNoix 04:13.47
18. cpatros 04:16.36
19. 雨希
25
04:25.42
20. insanebrain 04:31.27
This Week
1. Daiwie
88
01:24.24
2. Kenolo353
106
02:11.46
3. randomflyintaco
114
03:14.56
4. Dorice
244
03:17.23
5. aequidens
250
04:15.08
6. 雨希
25
04:25.42
7. Tezexlo
59
04:52.04
8. insanebrain 05:00.50
9. NanogramFreak 05:16.00
10. yasuyo 09:10.46
11. gorilla801 11:54.24
12. mrgmath
8
17:22.69
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Today
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5.--- empty -----:--
6.--- empty -----:--
7.--- empty -----:--
8.--- empty -----:--
9.--- empty -----:--
10.--- empty -----:--
11.--- empty -----:--
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13.--- empty -----:--
14.--- empty -----:--
15.--- empty -----:--
16.--- empty -----:--
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20.--- empty -----:--
MO3
1. Douglas Shamlin Jr.
700
01:01.56
2. Daiwie
88
01:13.65
3. home
192
01:35.44
4. Tunnel Keeper
63
01:36.37
5. numbrr
298
01:38.18
6. TashiroMiraki
216
01:40.69
7. 梦逍遥
68
01:44.39
8. GreyPotato
46
01:47.45
9. lmsc5k
63
01:48.77
10. vowels
216
01:50.31
AO5
1. Douglas Shamlin Jr.
700
01:01.56
2. Daiwie
88
01:15.59
3. Tunnel Keeper
63
01:37.18
4. home
192
01:37.45
5. TashiroMiraki
216
01:43.47
6. 梦逍遥
68
01:46.59
7. numbrr
298
01:48.68
8. GreyPotato
46
01:49.96
9. vowels
216
01:50.31
10. lmsc5k
63
01:52.55
AO12
1. Douglas Shamlin Jr.
700
01:05.53
2. Daiwie
88
01:18.98
3. home
192
01:42.18
4. Tunnel Keeper
63
01:45.85
5. TashiroMiraki
216
01:48.06
6. 梦逍遥
68
01:52.71
7. numbrr
298
01:54.77
8. GreyPotato
46
01:59.04
9. vowels
216
01:59.93
10. lmsc5k
63
02:00.44
Robots / programmatic solversinfo  
1.SATBot00:18.151
2.kanaderu
1
04:55.008
3.Kx1WillTill2:29:56.870

* 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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2025-08-17 00:28:34

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