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. sauceguardian
97
00:01.12
2. cugntear
33
00:01.28
3. marbleeeee 00:01.63
4. grimmgirlfandom
149
00:01.80
5. Kenolo353
98
00:02.11
6. lmsc5k
63
00:02.80
7. TQ-V85Sn
85
00:02.94
8. godfatheradambelieve...
17
00:02.99
9. xzaxzaazx
95
00:03.07
10. Polaris.
13
00:03.29
11. Trial
44
00:03.42
12. YoungNam 00:03.69
13. leonleonidis
48
00:03.85
14. Preston10
47
00:03.94
15. randomflyintaco
106
00:03.96
16. qobi
225
00:04.03
17. thost 00:04.48
18. pouldu
85
00:04.75
19. Dorice
241
00:04.80
20. Flexo
27
00:05.25
This Week
1. sauceguardian
97
00:01.12
2. Kenolo353
98
00:02.33
3. godfatheradambelieve...
17
00:02.99
4. Trial
44
00:03.42
5. marbleeeee 00:03.57
6. Preston10
47
00:03.94
7. pouldu
85
00:04.75
8. Flexo
27
00:05.25
9. randomflyintaco
106
00:05.64
10. qobi
225
00:05.88
11. Korneel 00:06.79
12. yyyyyyyejin
69
00:07.67
13. gorilla801 00:11.64
14. PheromoneJones 00:13.48
15. CLAVDIVS
54
00:15.17
16. 王奕凯
2
00:16.74
17. RosemaryW 00:25.90
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
Today
1. marbleeeee 00:03.57
2. randomflyintaco
106
00:11.77
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.
691
00:00.90
2. vowels
214
00:01.07
3. jaybrainer
233
00:01.27
4. numbrr
295
00:01.60
5.
247
00:01.73
6. sauceguardian
97
00:01.75
6. qqwref
259
00:01.75
8. EC31
23
00:01.79
9. sfumato
166
00:01.84
10. lmsc5k
63
00:01.91
AO5
1. Douglas Shamlin Jr.
691
00:00.96
2. vowels
214
00:01.44
3. jaybrainer
233
00:01.56
4. numbrr
295
00:01.73
5. qqwref
259
00:01.87
6.
247
00:01.90
7. lmsc5k
63
00:01.92
8. sauceguardian
97
00:01.94
9. Daiwie
85
00:01.97
10. sfumato
166
00:02.01
AO12
1. Douglas Shamlin Jr.
691
00:01.18
2. vowels
214
00:01.81
3. jaybrainer
233
00:02.06
4. numbrr
295
00:02.16
5. sauceguardian
97
00:02.28
6.
247
00:02.31
7. qqwref
259
00:02.40
8. lmsc5k
63
00:02.49
8. Daiwie
85
00:02.49
10. sfumato
166
00:02.51
Robots / programmatic solversinfo  
1.kanaderu
1
00:03.677
2.tari77
1
00:11.623
3.sysd
1
00:12.419

* 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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2025-06-15 12:27:32

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