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. Daiwie
97
01:09.29
2. home
208
01:17.28
3. marbleeeee 01:29.36
4. Tunnel Keeper
70
01:46.52
5. Kenolo353
120
01:46.78
6. lmsc5k
66
01:48.36
7. rinny 02:29.06
8. Irisa
142
02:34.58
9. Dorice
265
02:58.20
10. AnonyMinor
77
03:21.89
11. LesAM 03:22.93
12. RaiT
102
03:25.68
13. aequidens
264
03:27.53
14. Hybrid
176
03:34.25
15. Jbrunt
142
03:35.15
16. Avalon 03:44.90
17. Nazrei
71
04:24.57
18. silentmotorboat
24
04:27.59
19. Tezexlo
66
04:30.18
20. knmidorika
57
04:34.58
This Week
1. Daiwie
97
01:09.34
2. marbleeeee 01:37.33
3. Tunnel Keeper
70
01:46.52
4. Kenolo353
120
01:56.93
5. rinny 02:35.45
6. RaiT
102
03:25.68
7. aequidens
264
03:27.53
8. Hybrid
176
03:34.25
9. Tezexlo
66
04:39.67
10. qobi
235
05:03.95
11. WYJ
63
05:24.68
12. fcow001
18
06:15.86
13. JohnnyB 08:35.46
14. redcatdragon 09:25.85
15. Ontwikseltsaar
103
09:43.14
16. Catathyst
23
10:40.07
17. laries
39
11:22.25
18. Joris Brouwer
42
24:33.75
19.--- empty -----:--
20.--- empty -----:--
Today
1. Daiwie
97
01:09.34
2. rinny 02:35.45
3. aequidens
264
03:35.06
4. redcatdragon 09:25.85
5. laries
39
14:55.84
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
01:01.56
2. Daiwie
97
01:10.53
3. home
208
01:20.85
4. Tunnel Keeper
70
01:36.37
5. numbrr
310
01:38.18
6. TashiroMiraki
221
01:40.69
7. 梦逍遥
74
01:42.04
8. lmsc5k
66
01:46.18
9. GreyPotato
46
01:47.45
10. vowels
216
01:50.31
AO5
1. Douglas Shamlin Jr.
718
01:01.56
2. Daiwie
97
01:11.18
3. home
208
01:24.97
4. Tunnel Keeper
70
01:37.18
5. TashiroMiraki
221
01:43.47
6. 梦逍遥
74
01:44.40
7. numbrr
310
01:48.68
8. GreyPotato
46
01:49.96
9. vowels
216
01:50.31
10. lmsc5k
66
01:51.85
AO12
1. Douglas Shamlin Jr.
718
01:05.53
2. Daiwie
97
01:14.39
3. home
208
01:29.69
4. Tunnel Keeper
70
01:45.85
5. TashiroMiraki
221
01:48.06
6. 梦逍遥
74
01:49.64
7. numbrr
310
01:54.77
8. GreyPotato
46
01:59.04
9. lmsc5k
66
01:59.71
10. vowels
216
01:59.93
Robots / programmatic solversinfo  
1.SATBot00:18.151
2.Paul Bismuth
1
00:23.304
3.kanaderu
1
04:55.008

* 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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