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. sauceguardian
105
00:10.48
2. Kenolo353
120
00:11.04
3. home
208
00:11.78
4. Goomy
136
00:15.04
5. 3328037
72
00:15.22
6. IceRune
70
00:17.44
7. KarenNotARobot 00:18.17
8. Savia
76
00:24.90
9. qobi
235
00:25.40
10. ambiorix 00:32.52
11. GildedQuartz
5
00:33.32
12. kroller
20
00:34.32
13. gorilla801
1
00:40.82
14. ethanguo 00:42.24
15. Odenzon
17
00:43.47
16. Canon
19
00:48.86
17. MushroomsCavern
62
00:53.80
18. CLAVDIVS
74
00:56.00
19. Lissa
110
00:58.31
20. wainwain 01:09.23
This Week
1. sauceguardian
105
00:10.95
2. Kenolo353
120
00:14.37
3. KarenNotARobot 00:18.17
4. qobi
235
00:25.40
5. ambiorix 00:32.52
6. GildedQuartz
5
00:33.32
7. kroller
20
00:34.93
8. gorilla801
1
00:40.82
9. ethanguo 00:42.24
10. Odenzon
17
00:43.47
11. CLAVDIVS
74
00:57.86
12. wainwain 01:09.23
13. RosemaryW 01:13.63
14. Itstotallykyle
50
01:13.72
15. trigonometry 01:59.63
16. wow shibby
22
02:50.75
17. Bryson519 03:23.25
18. ShroomlyEnby 03:27.16
19. jenni14641
13
07:59.18
20.--- empty -----:--
Today
1. KarenNotARobot 00:24.80
2. ethanguo 00:42.24
3. CLAVDIVS
74
01:10.95
4. ShroomlyEnby 03:27.16
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.
718
00:06.79
2. Daiwie
97
00:10.18
3. numbrr
310
00:10.41
4. sauceguardian
105
00:11.32
5. TashiroMiraki
221
00:11.43
6. vowels
216
00:11.50
7. home
208
00:12.37
8. lmsc5k
66
00:12.39
9. Kenolo353
120
00:12.96
10. Tunnel Keeper
70
00:13.19
AO5
1. Douglas Shamlin Jr.
718
00:07.19
2. Daiwie
97
00:10.62
3. numbrr
310
00:12.12
4. TashiroMiraki
221
00:12.15
5. vowels
216
00:12.18
6. sauceguardian
105
00:12.19
7. home
208
00:12.39
8. lmsc5k
66
00:12.73
9. jaybrainer
258
00:13.55
10. Tunnel Keeper
70
00:13.58
AO12
1. Douglas Shamlin Jr.
718
00:08.09
2. Daiwie
97
00:11.20
3. vowels
216
00:12.94
4. numbrr
310
00:13.28
5. sauceguardian
105
00:13.63
6. TashiroMiraki
221
00:13.69
7. lmsc5k
66
00:14.06
8. Kenolo353
120
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.
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