Shakashaka


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Special thanks to Aevrin for the translation

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

This Month
1. Daiwie
87
01:04.96
2. home
190
01:26.41
3. lmsc5k
63
01:34.12
4. Tunnel Keeper
63
01:34.97
5. Kenolo353
104
02:08.79
6. sauceguardian
98
02:12.26
7. trj1111
27
02:51.85
8. randomflyintaco
113
03:01.24
9. LesAM 03:06.18
10. Frog The Toast
64
03:17.37
11. nealinco
187
03:18.83
12. aequidens
249
03:22.78
13. Wurre 03:29.07
14. heystonegalaxy
79
03:32.25
15. qobi
228
03:55.57
16. 喵緹
29
04:07.12
17. HerrNoix 04:13.47
18. cpatros 04:16.36
19. ihaveit 04:33.18
20. ZJTZLQLJY 04:46.90
This Week
1. Daiwie
87
01:16.10
2. Tunnel Keeper
63
01:50.09
3. lmsc5k
63
02:01.76
4. Kenolo353
104
02:12.37
5. sauceguardian
98
02:18.60
6. randomflyintaco
113
03:21.43
7. heystonegalaxy
79
03:50.93
8. aequidens
249
03:55.87
9. HerrNoix 04:13.47
10. ZJTZLQLJY 04:46.90
11. insanebrain 04:53.69
12. Tezexlo
59
04:58.76
13. Hashibrown 05:10.31
14. qobi
228
05:11.61
15. sixgs 05:20.03
16. drbop
43
4:52:15.25
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
Today
1. qobi
228
05:11.61
2.--- empty -----:--
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.
695
01:01.56
2. Daiwie
87
01:13.65
3. home
190
01:35.44
4. Tunnel Keeper
63
01:36.37
5. numbrr
298
01:38.18
6. TashiroMiraki
215
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.
695
01:01.56
2. Daiwie
87
01:15.59
3. Tunnel Keeper
63
01:37.18
4. home
190
01:37.45
5. TashiroMiraki
215
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.
695
01:05.53
2. Daiwie
87
01:18.98
3. home
190
01:42.18
4. Tunnel Keeper
63
01:45.85
5. TashiroMiraki
215
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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2025-07-31 03:36:15

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