Shakashaka


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Special thanks to Aevrin for the translation

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
107
01:11.27
2. sauceguardian
99
01:19.26
3. marbleeeee 01:49.78
4. randomflyintaco
115
01:53.04
5. Coolcon
89
01:58.52
6. Dorice
245
01:58.71
7. qobi
229
02:23.73
8. HerrNoix 02:36.34
9. insanebrain 02:41.61
10. AnonyMinor
55
02:59.66
11. Usher BArCs
49
03:04.75
12. sixgs 03:50.34
13. ambiorix 04:01.17
14. gorilla801 05:55.69
15. mrgmath
9
05:56.66
16. jlwill 13:09.76
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This Week
1. Kenolo353
107
01:13.33
2. randomflyintaco
115
01:53.04
3. Dorice
245
01:58.71
4. HerrNoix 02:36.34
5. ambiorix 04:52.87
6. gorilla801 05:55.69
7. mrgmath
9
05:56.66
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Today
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MO3
1. Douglas Shamlin Jr.
702
00:36.51
2. Daiwie
88
00:48.09
3. TashiroMiraki
216
00:55.98
4. numbrr
298
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.
702
00:38.16
2. Daiwie
88
00:48.49
3. TashiroMiraki
216
00:57.30
4. Tunnel Keeper
64
01:00.13
5. numbrr
298
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.
702
00:39.23
2. Daiwie
88
00:57.33
3. TashiroMiraki
216
01:01.20
4. Tunnel Keeper
64
01:02.54
5. numbrr
298
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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2025-08-21 00:46:17

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