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
97
01:09.29
2. home
206
01:19.28
3. marbleeeee 01:29.36
4. lmsc5k
66
01:44.15
5. Kenolo353
119
01:46.80
6. rinny 02:29.06
7. Irisa
138
02:34.58
8. Dorice
264
02:58.20
9. Nazrei
70
03:19.58
10. AnonyMinor
75
03:21.89
11. Avalon 03:22.54
12. LesAM 03:22.93
13. knmidorika
57
03:29.64
14. Hybrid
173
03:35.14
15. Jbrunt
142
03:35.15
16. aequidens
262
03:36.92
17. qobi
234
04:17.33
18. silentmotorboat
22
04:27.59
19. May John
97
04:29.63
20. Tezexlo
66
04:30.18
This Week
1. Daiwie
97
01:09.29
2. marbleeeee 01:29.36
3. lmsc5k
66
01:54.43
4. Kenolo353
119
01:59.30
5. rinny 02:29.06
6. Irisa
138
02:47.48
7. Jbrunt
142
03:35.15
8. aequidens
262
03:36.92
9. Tezexlo
66
04:30.18
10. qobi
234
04:49.82
11. ethanguo 04:58.16
12. Dorice
264
05:09.15
13. WYJ
60
05:27.18
14. NanogramFreak 05:47.36
15. knmidorika
57
05:59.81
16. AnonyMinor
75
06:08.74
17. fcow001
15
06:54.06
18. りゅい
41
09:12.11
19.--- empty -----:--
20.--- empty -----:--
Today
1. lmsc5k
66
01:54.43
2. Kenolo353
119
01:59.30
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.
718
01:01.56
2. Daiwie
97
01:10.94
3. home
206
01:23.39
4. Tunnel Keeper
69
01:36.37
5. numbrr
309
01:38.18
6. TashiroMiraki
220
01:40.69
7. 梦逍遥
74
01:42.04
8. lmsc5k
66
01:46.18
9. GreyPotato
46
01:47.45
10. vowels
216
01:50.31
AO5
1. Douglas Shamlin Jr.
718
01:01.56
2. Daiwie
97
01:11.91
3. home
206
01:26.73
4. Tunnel Keeper
69
01:37.18
5. TashiroMiraki
220
01:43.47
6. 梦逍遥
74
01:44.40
7. numbrr
309
01:48.68
8. GreyPotato
46
01:49.96
9. vowels
216
01:50.31
10. lmsc5k
66
01:51.85
AO12
1. Douglas Shamlin Jr.
718
01:05.53
2. Daiwie
97
01:14.39
3. home
206
01:29.69
4. Tunnel Keeper
69
01:45.85
5. TashiroMiraki
220
01:48.06
6. 梦逍遥
74
01:49.64
7. numbrr
309
01:54.77
8. GreyPotato
46
01:59.04
9. lmsc5k
66
01:59.71
10. vowels
216
01:59.93
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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2026-03-15 04:30:03

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