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
112
00:35.73
2. sauceguardian
101
00:36.75
3. lmsc5k
64
00:38.97
4. Dorice
251
00:46.04
5. Wangxuye 00:55.56
6. randomflyintaco
126
01:00.94
7. all-trees
45
01:04.20
8. RealShrimp 01:07.89
9. insanebrain 01:09.38
10. AnonyMinor
60
01:17.71
11. qobi
231
01:20.97
12. Jazka 01:27.18
13. burgie12 01:33.96
14. ambiorix 01:36.35
15. mrgmath
17
01:44.38
16. SakyhyKaren 01:51.32
17. Cyber King
48
01:52.08
18. AlexanderIII 01:58.56
19. RaiAT
68
01:58.86
20. gorilla801 02:09.49
This Week
1. Kenolo353
112
00:41.59
2. sauceguardian
101
00:42.07
3. randomflyintaco
126
01:04.59
4. insanebrain 01:09.38
5. burgie12 01:33.96
6. SakyhyKaren 01:51.32
7. mrgmath
17
01:52.29
8. gorilla801 02:29.67
9. CLAVDIVS
64
03:05.67
10. CandyPlayer
6
03:18.92
11. sronse 03:37.69
12. Wuni14 03:45.53
13. RosemaryW 05:47.98
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20.--- empty -----:--
Today
1. Kenolo353
112
00:43.79
2. SakyhyKaren 01:51.32
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.
713
00:18.49
2. Daiwie
91
00:26.99
3. lmsc5k
64
00:32.03
4. TashiroMiraki
217
00:32.76
5. numbrr
301
00:32.84
6. sauceguardian
101
00:33.14
7. vowels
216
00:34.09
8. gregg__
79
00:35.04
9. home
192
00:36.38
10. Tunnel Keeper
65
00:37.66
AO5
1. Douglas Shamlin Jr.
713
00:19.11
2. Daiwie
91
00:28.02
3. numbrr
301
00:33.90
4. TashiroMiraki
217
00:34.01
5. vowels
216
00:34.10
6. lmsc5k
64
00:34.60
7. sauceguardian
101
00:35.33
8. home
192
00:37.94
9. gregg__
79
00:38.08
10. Tunnel Keeper
65
00:38.89
AO12
1. Douglas Shamlin Jr.
713
00:19.90
2. Daiwie
91
00:29.65
3. TashiroMiraki
217
00:35.62
4. lmsc5k
64
00:37.66
5. vowels
216
00:37.84
6. sauceguardian
101
00:38.49
7. numbrr
301
00:39.34
8. Tunnel Keeper
65
00:41.99
9. MEGACHEESE
76
00:42.48
10. siri
40
00:42.55
Robots / programmatic solversinfo  
1.GrodGruffalo00:57.455
2.lucaskao03:28.523
3.tari77
1
04:04.574

* 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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2025-10-18 22:56:53

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