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. sauceguardian
108
00:09.38
2. Kenolo353
123
00:14.20
3. KarenNotARobot 00:14.66
4. shiningyang
16
00:16.99
5. MadraMor
161
00:17.41
6. qobi
238
00:22.88
7. Parker M
19
00:23.27
8. Jazka 00:36.33
9. Joshyb 00:39.68
10. kroller
22
00:40.39
11. ethan1021
13
00:41.73
12. kornelbut
45
00:44.93
13. L1dji
5
00:48.87
14. gorilla801
1
00:51.57
15. Odenzon
34
00:53.80
16. CLAVDIVS
79
00:54.31
17. 신동근
18
00:55.18
18. ambiorix 00:56.04
19. Kukko
178
00:57.17
20. epicuro
6
00:59.19
This Week
1. sauceguardian
108
00:09.46
2. shiningyang
16
00:16.99
3. Kenolo353
123
00:17.66
4. KarenNotARobot 00:23.87
5. qobi
238
00:31.43
6. L1dji
5
00:48.87
7. 신동근
18
00:55.18
8. CLAVDIVS
79
00:55.95
9. Odenzon
34
01:01.38
10. ambiorix 01:04.41
11. chube 01:13.12
12. RosemaryW 01:35.74
13. DTC2302
23
01:47.12
14. enthusiasm 01:47.15
15. AstroNovalite
34
01:59.09
16. Uthor 16d 12:56:56.16
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
Today
1. sauceguardian
108
00:09.46
2. KarenNotARobot 00:23.87
3. Odenzon
34
01:01.38
4. Uthor 16d 12:56:56.16
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.
721
00:06.79
2. Daiwie
102
00:10.18
3. numbrr
321
00:10.41
4. sauceguardian
108
00:11.16
5. TashiroMiraki
228
00:11.43
6. vowels
216
00:11.50
7. lmsc5k
68
00:11.97
8. jaybrainer
268
00:12.32
9. home
215
00:12.37
10. Kenolo353
123
00:12.96
AO5
1. Douglas Shamlin Jr.
721
00:07.19
2. Daiwie
102
00:10.62
3. sauceguardian
108
00:11.71
4. numbrr
321
00:12.12
5. TashiroMiraki
228
00:12.15
6. vowels
216
00:12.18
7. home
215
00:12.39
8. lmsc5k
68
00:12.73
9. jaybrainer
268
00:13.11
10. Tunnel Keeper
71
00:13.58
AO12
1. Douglas Shamlin Jr.
721
00:08.09
2. Daiwie
102
00:11.20
3. vowels
216
00:12.94
4. sauceguardian
108
00:13.10
5. numbrr
321
00:13.28
6. TashiroMiraki
228
00:13.69
7. lmsc5k
68
00:14.03
8. jaybrainer
268
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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