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
94
01:12.91
2. Tunnel Keeper
67
01:38.58
3. lmsc5k
65
01:42.16
4. Kenolo353
115
01:55.89
5. marbleeeee 02:00.64
6. 3328037
62
02:21.79
7. YoungNam 02:22.30
8. Goomy
129
02:37.59
9. Dorice
256
03:07.35
10. insanebrain 03:14.85
11. randomflyintaco
136
03:20.42
12. MingQuk
1
03:25.75
13. aequidens
259
03:29.36
14. Kuzuyu 03:33.23
15. hoodxxc
232
04:02.64
16. rinny 04:25.09
17. AnonyMinor
67
04:31.66
18. chenh 04:44.61
19. Tezexlo
63
04:47.02
20. aeunchae
8
05:06.91
This Week
1. Daiwie
94
01:16.96
2. marbleeeee 02:06.97
3. Kenolo353
115
02:09.69
4. Dorice
256
03:20.17
5. Kuzuyu 03:33.23
6. aequidens
259
03:43.57
7. rinny 04:26.59
8. Tezexlo
63
04:47.02
9. akiazusa 05:12.44
10. knmidorika
54
06:03.10
11. gorilla801
1
08:03.45
12. Labyrinth35 08:38.45
13. daisykid 09:39.24
14. nassis
4
11:44.96
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20.--- empty -----:--
Today
1. Labyrinth35 08:43.74
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.
715
01:01.56
2. Daiwie
94
01:12.75
3. home
196
01:35.44
4. Tunnel Keeper
67
01:36.37
5. numbrr
303
01:38.18
6. TashiroMiraki
217
01:40.69
7. 梦逍遥
71
01:44.39
8. GreyPotato
46
01:47.45
9. lmsc5k
65
01:48.77
10. vowels
216
01:50.31
AO5
1. Douglas Shamlin Jr.
715
01:01.56
2. Daiwie
94
01:11.95
3. Tunnel Keeper
67
01:37.18
4. home
196
01:37.45
5. TashiroMiraki
217
01:43.47
6. 梦逍遥
71
01:46.59
7. numbrr
303
01:48.68
8. GreyPotato
46
01:49.96
9. vowels
216
01:50.31
10. lmsc5k
65
01:52.55
AO12
1. Douglas Shamlin Jr.
715
01:05.53
2. Daiwie
94
01:18.98
3. home
196
01:42.18
4. Tunnel Keeper
67
01:45.85
5. TashiroMiraki
217
01:48.06
6. 梦逍遥
71
01:52.71
7. numbrr
303
01:54.77
8. GreyPotato
46
01:59.04
9. vowels
216
01:59.93
10. lmsc5k
65
02:00.44
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.
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2025-12-16 07:18:04

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