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
116
01:06.87
2. randomflyintaco
137
02:10.52
3. AnonyMinor
68
02:21.04
4. Reeeeeeeed 03:38.89
5. knmidorika
54
03:40.81
6. Irisa
109
03:41.46
7. gorilla801
1
03:50.93
8. SakyhyKaren 04:05.74
9. Koakuma
51
04:15.00
10. 白切叉燒鵝
54
04:38.37
11. Rickieman86 05:03.64
12. crema
243
05:28.17
13. drbop
47
07:41.11
14. K won
20
17:46.05
15.--- empty -----:--
16.--- empty -----:--
17.--- empty -----:--
18.--- empty -----:--
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20.--- empty -----:--
This Week
1. Kenolo353
116
01:06.87
2. AnonyMinor
68
02:21.04
3. randomflyintaco
137
02:41.60
4. gorilla801
1
03:55.58
5. SakyhyKaren 04:33.83
6. 白切叉燒鵝
54
04:38.37
7. crema
243
05:28.17
8. drbop
47
07:41.11
9.--- empty -----:--
10.--- empty -----:--
11.--- empty -----:--
12.--- empty -----:--
13.--- empty -----:--
14.--- empty -----:--
15.--- empty -----:--
16.--- empty -----:--
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
Today
1. gorilla801
1
04:15.13
2.--- empty -----:--
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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20.--- empty -----:--
MO3
1. Douglas Shamlin Jr.
716
00:36.51
2. Daiwie
94
00:48.09
3. TashiroMiraki
217
00:55.98
4. numbrr
305
00:57.92
5. Tunnel Keeper
67
00:59.85
6. vowels
216
01:00.51
7. lmsc5k
65
01:05.28
8. home
197
01:08.43
9. Kenolo353
116
01:10.63
10. sauceguardian
103
01:12.38
AO5
1. Douglas Shamlin Jr.
716
00:38.16
2. Daiwie
94
00:48.49
3. TashiroMiraki
217
00:57.30
4. Tunnel Keeper
67
01:00.13
5. numbrr
305
01:00.68
6. vowels
216
01:05.16
7. lmsc5k
65
01:06.46
8. home
197
01:08.43
9. Kenolo353
116
01:11.80
10. qqwref
266
01:14.12
AO12
1. Douglas Shamlin Jr.
716
00:39.23
2. Daiwie
94
00:57.33
3. TashiroMiraki
217
01:01.20
4. Tunnel Keeper
67
01:02.54
5. numbrr
305
01:07.40
6. vowels
216
01:08.91
7. lmsc5k
65
01:11.49
8. Kenolo353
116
01:17.65
9. sauceguardian
103
01:18.45
10. home
197
01:21.63
Robots / programmatic solversinfo  
1.Paul Bismuth
1
00:15.743
2.kanaderu
1
04:45.694
3.dansto76510:53.339

* 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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2026-01-01 22:43:30

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