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
97
00:08.79
2. Kenolo353
98
00:14.51
3. lmsc5k
63
00:16.44
4. randomflyintaco
106
00:17.79
5. cugntear
33
00:17.92
6. 3328037
46
00:19.41
7. KarenNotARobot 00:21.19
8. marbleeeee 00:22.96
9. Dorice
241
00:24.34
10. qobi
225
00:24.70
11. xzaxzaazx
95
00:25.98
12. zooandroo
96
00:31.35
13. AlexanderIII 00:31.98
14. Asirano
44
00:35.80
15. cpatros 00:36.73
16. GuelphBuyersClub
5
00:40.63
17. sixgs 00:41.21
18. ambiorix 00:42.53
19. Korneel 00:46.36
20. gorilla801 00:48.34
This Week
1. sauceguardian
97
00:08.79
2. Kenolo353
98
00:15.81
3. randomflyintaco
106
00:22.73
4. KarenNotARobot 00:22.80
5. marbleeeee 00:22.96
6. Dorice
241
00:24.34
7. qobi
225
00:24.70
8. AlexanderIII 00:37.74
9. Korneel 00:46.36
10. gorilla801 01:02.61
11. GuelphBuyersClub
5
01:04.28
12. CLAVDIVS
54
01:12.30
13. Tartempion 01:33.90
14. yyyyyyyejin
69
02:14.78
15. mrgmath
5
02:16.85
16. drbop
39
02:25.76
17. RosemaryW 03:14.79
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
Today
1. AlexanderIII 00:48.71
2. CLAVDIVS
54
01:22.27
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.
691
00:06.79
2. Daiwie
85
00:10.18
3. numbrr
295
00:10.41
4. sauceguardian
97
00:11.32
5. TashiroMiraki
215
00:11.43
6. vowels
214
00:11.50
7. lmsc5k
63
00:12.39
8. Tunnel Keeper
62
00:13.19
9. jaybrainer
233
00:13.22
10. sfumato
166
00:13.88
AO5
1. Douglas Shamlin Jr.
691
00:07.19
2. Daiwie
85
00:10.62
3. numbrr
295
00:12.12
4. TashiroMiraki
215
00:12.15
5. vowels
214
00:12.18
6. sauceguardian
97
00:12.24
7. lmsc5k
63
00:12.73
8. jaybrainer
233
00:13.55
9. Tunnel Keeper
62
00:13.58
10. qqwref
259
00:14.27
AO12
1. Douglas Shamlin Jr.
691
00:08.09
2. Daiwie
85
00:11.20
3. vowels
214
00:12.94
4. numbrr
295
00:13.28
5. sauceguardian
97
00:13.63
6. TashiroMiraki
215
00:13.69
7. lmsc5k
63
00:14.06
8. qqwref
259
00:15.59
9. Tunnel Keeper
62
00:16.78
10. jaybrainer
233
00:16.91
Robots / programmatic solversinfo  
1.Chen Enxiu
1
02:28.288
2.sysd
1
03:16.357
3.dansto76503:29.621

* 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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2025-06-15 13:41:45

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