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.KarenNotARobot 00:14.62
2.Kenolo353
123
00:17.52
3.qobi
244
00:23.27
4.BigHeadGriffin
39
00:23.83
5.FishingPanda 00:24.13
6.Meerkat
222
00:27.52
7.KingKahuka 00:33.23
8.kroller
28
00:40.25
9.yoyo
33
00:43.06
10.ambiorix 00:43.63
11.oddsocks 00:43.71
12.JNakamura
18
00:44.04
13.신동근
19
00:45.97
14.mts55
52
00:46.53
15.Canon
19
00:49.91
16.Gastel
29
00:54.55
17.RosemaryW 00:55.36
18.SkyR
12
01:01.71
19.CLAVDIVS
84
01:04.43
20.Iridium 01:04.78
This Week
1.KarenNotARobot 00:17.78
2.qobi
244
00:30.79
3.kroller
28
00:40.25
4.ambiorix 00:43.63
5.JNakamura
18
00:44.04
6.SkyR
12
01:01.71
7.Iridium 01:04.78
8.blumlo
4
01:05.82
9.Goober 01:10.62
10.RosemaryW 01:15.36
11.NiuDa 03:51.35
12.Jackwaite
21
04:08.03
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Today
1.KarenNotARobot 00:17.78
2.blumlo
4
01:05.82
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MO3
1.Douglas Shamlin Jr.
724
00:06.79
2.sauceguardian
118
00:09.78
3.Daiwie
104
00:10.18
4.numbrr
329
00:10.41
5.TashiroMiraki
234
00:11.43
6.vowels
216
00:11.50
7.lmsc5k
69
00:11.97
8.jaybrainer
288
00:12.32
9.home
220
00:12.37
10.Kenolo353
123
00:12.96
AO5
1.Douglas Shamlin Jr.
724
00:07.19
2.sauceguardian
118
00:10.09
3.Daiwie
104
00:10.62
4.numbrr
329
00:12.12
5.TashiroMiraki
234
00:12.15
6.vowels
216
00:12.18
7.home
220
00:12.39
8.lmsc5k
69
00:12.73
9.jaybrainer
288
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
118
00:11.26
4.vowels
216
00:12.94
5.numbrr
329
00:13.28
6.TashiroMiraki
234
00:13.69
7.lmsc5k
69
00:14.03
8.jaybrainer
288
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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