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. sauceguardian
104
00:09.21
2. Kenolo353
118
00:10.34
3. 3328037
65
00:16.06
4. KarenNotARobot 00:20.20
5. qobi
234
00:25.95
6. AlexanderIII 00:27.75
7. AnonyMinor
73
00:29.36
8. AkiyamaMizuki 00:31.85
9. Rhododendron
148
00:32.09
10. May John
95
00:32.82
11. epicuro
6
00:36.82
12. 白切叉燒鵝
63
00:39.50
13. ambiorix 00:39.69
14. gorilla801
1
00:46.28
15. CLAVDIVS
72
00:52.38
16. Canon
19
00:53.15
17. RosemaryW 01:00.54
18. MaraSov
17
01:01.83
19. JudithL
12
01:07.00
20. daspore 01:12.02
This Week
1. sauceguardian
104
00:09.83
2. Kenolo353
118
00:12.80
3. 3328037
65
00:16.06
4. KarenNotARobot 00:21.42
5. qobi
234
00:31.29
6. AlexanderIII 00:35.74
7. epicuro
6
00:36.82
8. gorilla801
1
00:51.85
9. syxxnul 01:16.18
10. CLAVDIVS
72
01:18.34
11. c1c51
41
01:24.82
12. kroller
18
01:26.70
13. RosemaryW 02:10.45
14. FunAcroFly
122
02:18.03
15. sgrcw
14
04:35.92
16. jasoneb
41
05:12.78
17. Adam Jones
38
08:44.94
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
Today
1. sauceguardian
104
00:14.14
2. 3328037
65
00:16.06
3. Kenolo353
118
00:18.74
4. KarenNotARobot 00:21.42
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.
717
00:06.79
2. Daiwie
96
00:10.18
3. numbrr
308
00:10.41
4. sauceguardian
104
00:11.32
5. TashiroMiraki
218
00:11.43
6. vowels
216
00:11.50
7. lmsc5k
66
00:12.39
8. Kenolo353
118
00:12.96
9. Tunnel Keeper
69
00:13.19
10. jaybrainer
251
00:13.22
AO5
1. Douglas Shamlin Jr.
717
00:07.19
2. Daiwie
96
00:10.62
3. numbrr
308
00:12.12
4. TashiroMiraki
218
00:12.15
5. vowels
216
00:12.18
6. sauceguardian
104
00:12.19
7. lmsc5k
66
00:12.73
8. jaybrainer
251
00:13.55
9. Tunnel Keeper
69
00:13.58
10. Kenolo353
118
00:14.02
AO12
1. Douglas Shamlin Jr.
717
00:08.09
2. Daiwie
96
00:11.20
3. vowels
216
00:12.94
4. numbrr
308
00:13.28
5. sauceguardian
104
00:13.63
6. TashiroMiraki
218
00:13.69
7. lmsc5k
66
00:14.06
8. qqwref
266
00:15.59
9. Kenolo353
118
00:15.82
10. Tunnel Keeper
69
00:16.78
Robots / programmatic solversinfo  
1.Paul Bismuth
1
00:03.495
2.hsjbh
1
01:26.414
3.Chen Enxiu
1
02:28.288

* 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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2026-02-20 21:56:51

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