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°

Video Tutorial
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Shakashaka


5x5 Shakashaka | 10x10 Shakashaka | 15x15 Shakashaka | 20x20 Shakashaka | 25x25 Shakashaka

New Puzzle
This Month
1. sauceguardian
117
00:07.98
2. PuzzleMaestro
108
00:14.23
3. KarenNotARobot 00:14.62
4. RaiT
124
00:15.16
5. Dorice
275
00:20.51
6. qobi
243
00:22.72
7. BigHeadGriffin
36
00:23.83
8. Meerkat
220
00:27.52
9. Otenkiya
70
00:32.80
10. randomflyintaco
151
00:33.32
11. miloš petronijević
65
00:33.98
12. yoyo
26
00:43.06
13. ma2urka 00:44.42
14. 신동근
19
00:45.97
15. Koakuma
55
00:46.15
16. passngrin 00:46.50
17. mts55
47
00:46.53
18. unko
32
00:48.15
19. ambiorix 00:48.60
20. Canon
19
00:49.91
This Week
1. KarenNotARobot 00:14.62
2. BigHeadGriffin
36
00:23.83
3. Meerkat
220
00:27.52
4. 신동근
19
00:45.97
5. mts55
47
00:46.53
6. xxxxxxxl 01:29.76
7. RosemaryW 01:41.03
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MO3
1. Douglas Shamlin Jr.
724
00:06.79
2. sauceguardian
117
00:09.78
3. Daiwie
104
00:10.18
4. numbrr
326
00:10.41
5. TashiroMiraki
234
00:11.43
6. vowels
216
00:11.50
7. lmsc5k
69
00:11.97
8. jaybrainer
284
00:12.32
9. home
218
00:12.37
10. Kenolo353
123
00:12.96
AO5
1. Douglas Shamlin Jr.
724
00:07.19
2. sauceguardian
117
00:10.09
3. Daiwie
104
00:10.62
4. numbrr
326
00:12.12
5. TashiroMiraki
234
00:12.15
6. vowels
216
00:12.18
7. home
218
00:12.39
8. lmsc5k
69
00:12.73
9. jaybrainer
284
00:13.11
10. Tunnel Keeper
73
00:13.58
AO12
1. Douglas Shamlin Jr.
724
00:08.09
2. Daiwie
104
00:11.20
3. sauceguardian
117
00:11.26
4. vowels
216
00:12.94
5. numbrr
326
00:13.28
6. TashiroMiraki
234
00:13.69
7. lmsc5k
69
00:14.03
8. jaybrainer
284
00:14.99
9. Kenolo353
123
00:15.52
10. qqwref
266
00:15.59
Robots / programmatic solversinfo  
1.Paul Bismuth
1
00:03.495
2.Tristan703
1
01:14.874
3.hsjbh
1
01:26.414

* 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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