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
00:10.84
2. sauceguardian
103
00:12.69
3. 飞飞
52
00:15.23
4. KarenNotARobot 00:22.16
5. Irisa
113
00:25.87
6. kroller
15
00:27.78
7. randomflyintaco
137
00:28.30
8. qobi
233
00:30.60
9. knmidorika
55
00:38.50
10. AlexanderIII 00:39.09
11. gorilla801
1
00:41.75
12. CLAVDIVS
69
00:47.05
13. LordHedgie 00:54.11
14. Koakuma
51
00:55.13
15. ambiorix 00:56.84
16. androcles 00:57.47
17. e74yp8
5
00:59.05
18. 白切叉燒鵝
56
01:02.36
19. Canon
19
01:03.43
20. Kimberly Fath
21
01:06.77
This Week
1. Kenolo353
116
00:11.86
2. 飞飞
52
00:15.23
3. KarenNotARobot 00:25.49
4. kroller
15
00:29.74
5. knmidorika
55
00:38.50
6. gorilla801
1
00:42.32
7. CLAVDIVS
69
00:47.05
8. LordHedgie 00:54.11
9. e74yp8
5
00:59.05
10. ambiorix 01:01.22
11. AlexanderIII 01:03.23
12. RosemaryW 01:09.91
13. MaraSov
12
01:49.16
14. Tartempion 02:52.37
15. cinro996
15
04:05.57
16.--- empty -----:--
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
Today
1. knmidorika
55
00:38.50
2. gorilla801
1
00:51.99
3. CLAVDIVS
69
00:53.22
4. e74yp8
5
01:01.62
5. AlexanderIII 01:03.23
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.
716
00:06.79
2. Daiwie
95
00:10.18
3. numbrr
305
00:10.41
4. sauceguardian
103
00:11.32
5. TashiroMiraki
217
00:11.43
6. vowels
216
00:11.50
7. lmsc5k
65
00:12.39
8. Kenolo353
116
00:12.96
9. Tunnel Keeper
67
00:13.19
10. jaybrainer
247
00:13.22
AO5
1. Douglas Shamlin Jr.
716
00:07.19
2. Daiwie
95
00:10.62
3. numbrr
305
00:12.12
4. TashiroMiraki
217
00:12.15
5. vowels
216
00:12.18
6. sauceguardian
103
00:12.24
7. lmsc5k
65
00:12.73
8. jaybrainer
247
00:13.55
9. Tunnel Keeper
67
00:13.58
10. Kenolo353
116
00:14.02
AO12
1. Douglas Shamlin Jr.
716
00:08.09
2. Daiwie
95
00:11.20
3. vowels
216
00:12.94
4. numbrr
305
00:13.28
5. sauceguardian
103
00:13.63
6. TashiroMiraki
217
00:13.69
7. lmsc5k
65
00:14.06
8. qqwref
266
00:15.59
9. Kenolo353
116
00:15.82
10. Tunnel Keeper
67
00:16.78
Robots / programmatic solversinfo  
1.Paul Bismuth
1
00:03.495
2.hsjbh
1
01:26.414
3.Chen Enxiu
1
02:28.288

* 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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2026-01-12 02:00:53

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