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. Kenolo353
108
01:11.27
2. sauceguardian
99
01:20.72
3. marbleeeee 01:49.78
4. randomflyintaco
116
01:53.04
5. Dorice
246
01:58.71
6. insanebrain 02:22.77
7. HerrNoix 02:36.34
8. AnonyMinor
56
02:59.66
9. Usher BArCs
50
03:04.75
10. La22y 03:29.22
11. ambiorix 03:39.63
12. godfatheradambelieve...
21
04:28.41
13. SakyhyKaren 04:31.61
14. CLAVDIVS
60
05:27.06
15. gorilla801 05:55.69
16. mrgmath
10
05:56.66
17. RosemaryW 09:17.32
18. jlwill 13:09.76
19. drbop
44
2:00:58.12
20.--- empty -----:--
This Week
1. Kenolo353
108
01:24.57
2. randomflyintaco
116
02:06.52
3. insanebrain 02:22.77
4. AnonyMinor
56
03:02.73
5. La22y 03:29.22
6. godfatheradambelieve...
21
04:28.41
7. SakyhyKaren 04:34.51
8. gorilla801 06:52.29
9. drbop
44
2:00:58.12
10.--- empty -----:--
11.--- empty -----:--
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13.--- empty -----:--
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15.--- empty -----:--
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Today
1. Kenolo353
108
01:41.05
2. AnonyMinor
56
03:02.73
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 -----:--
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19.--- empty -----:--
20.--- empty -----:--
MO3
1. Douglas Shamlin Jr.
704
00:36.51
2. Daiwie
88
00:48.09
3. TashiroMiraki
216
00:55.98
4. numbrr
300
00:57.92
5. Tunnel Keeper
64
00:59.85
6. vowels
216
01:00.51
7. lmsc5k
63
01:06.53
8. home
192
01:08.43
9. sauceguardian
99
01:12.38
10. qqwref
260
01:12.68
AO5
1. Douglas Shamlin Jr.
704
00:38.16
2. Daiwie
88
00:48.49
3. TashiroMiraki
216
00:57.30
4. Tunnel Keeper
64
01:00.13
5. numbrr
300
01:00.68
6. vowels
216
01:05.16
7. home
192
01:08.43
8. lmsc5k
63
01:09.37
9. qqwref
260
01:14.12
10. sauceguardian
99
01:14.42
AO12
1. Douglas Shamlin Jr.
704
00:39.23
2. Daiwie
88
00:57.33
3. TashiroMiraki
216
01:01.20
4. Tunnel Keeper
64
01:02.54
5. numbrr
300
01:07.40
6. vowels
216
01:08.91
7. lmsc5k
63
01:13.90
8. sauceguardian
99
01:18.45
9. home
192
01:21.63
10. qqwref
260
01:22.02
Robots / programmatic solversinfo  
1.kanaderu
1
04:45.694
2.dansto76510:53.339
3.Chen Enxiu
1
17:46.098

* 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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2025-08-31 07:19:24

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