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°

Video Tutorial
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Shakashaka


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

New Puzzle
This Month
1. ypw19
91
00:11.95
2. sauceguardian
105
00:12.57
3. Kenolo353
122
00:14.17
4. KarenNotARobot 00:19.06
5. qobi
236
00:25.52
6. Ruan
46
00:27.04
7. knmidorika
58
00:29.82
8. FishingPanda 00:31.38
9. Puz-Zul
64
00:33.11
10. GildedQuartz
10
00:33.91
11. WYJ
71
00:35.96
12. Jiaminzhao
11
00:40.97
13. 신동근
17
00:41.35
14. Odenzon
30
00:42.24
15. gorilla801
1
00:42.95
16. SLinkTechInc 00:44.99
17. CLAVDIVS
75
00:47.24
18. ambiorix 00:51.73
19. 吳承恩
35
00:57.23
20. highprime
142
00:59.20
This Week
1. sauceguardian
105
00:13.41
2. Kenolo353
122
00:17.77
3. KarenNotARobot 00:19.80
4. qobi
236
00:25.52
5. FishingPanda 00:31.38
6. WYJ
71
00:35.96
7. 신동근
17
00:41.35
8. gorilla801
1
00:56.80
9. CLAVDIVS
75
00:59.97
10. daisyisaflower 01:01.59
11. ambiorix 01:02.76
12. lukingood
7
01:10.55
13. RosemaryW 01:35.73
14. Kukko
172
01:40.24
15. yosiaki
107
02:26.33
16. leo1999
21
02:53.43
17. Cricketwithagun
26
02:55.36
18. sleepyam 06:49.76
19. 0mega
207
08:39.14
20.--- empty -----:--
Today
1. sauceguardian
105
00:15.09
2. yosiaki
107
02:26.33
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 -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
MO3
1. Douglas Shamlin Jr.
719
00:06.79
2. Daiwie
100
00:10.18
3. numbrr
315
00:10.41
4. sauceguardian
105
00:11.32
5. TashiroMiraki
225
00:11.43
6. vowels
216
00:11.50
7. home
211
00:12.37
8. lmsc5k
67
00:12.39
9. Kenolo353
122
00:12.96
10. Tunnel Keeper
70
00:13.19
AO5
1. Douglas Shamlin Jr.
719
00:07.19
2. Daiwie
100
00:10.62
3. numbrr
315
00:12.12
4. TashiroMiraki
225
00:12.15
5. vowels
216
00:12.18
6. sauceguardian
105
00:12.19
7. home
211
00:12.39
8. lmsc5k
67
00:12.73
9. jaybrainer
262
00:13.55
10. Tunnel Keeper
70
00:13.58
AO12
1. Douglas Shamlin Jr.
719
00:08.09
2. Daiwie
100
00:11.20
3. vowels
216
00:12.94
4. numbrr
315
00:13.28
5. sauceguardian
105
00:13.63
6. TashiroMiraki
225
00:13.69
7. lmsc5k
67
00:14.06
8. Kenolo353
122
00:15.52
9. qqwref
266
00:15.59
10. Tunnel Keeper
70
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.
You need to be logged in to track your averages

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