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

This Month
1. Daiwie
79
00:01.71
2. KarenNotARobot 00:01.80
3. 3328037
32
00:02.32
4. sauceguardian
95
00:02.52
5. GoldChoco36
131
00:02.85
6. Dorice
236
00:02.99
7. randomflyintaco
102
00:03.57
8. Kenolo353
88
00:03.70
9. LesAM 00:04.10
10. qobi
219
00:04.73
11. foreverrui 00:04.80
12. wyq97 00:05.09
13. Board
72
00:05.22
14. V Perm
9
00:05.39
15. rambo00
30
00:05.69
16. 预防老年痴呆
5
00:05.95
17. sixgs 00:06.17
18. IkunPlz 00:07.54
19. Lambchops
16
00:07.70
19. gorilla801 00:07.70
This Week
1. KarenNotARobot 00:02.08
2. sauceguardian
95
00:02.52
3. Dorice
236
00:02.99
4. randomflyintaco
102
00:03.96
5. Kenolo353
88
00:04.53
6. wyq97 00:05.09
7. 预防老年痴呆
5
00:05.95
8. sixgs 00:06.17
9. Liangem
7
00:09.62
10. gorilla801 00:09.69
11. AaAaAa1 00:13.23
12. CLAVDIVS
48
00:15.79
13. ElToro 00:18.90
14. capzlok
8
00:21.07
15. pulchniak
2
00:25.76
16. Luis Poma
2
00:35.81
17. Kcirderf 01:04.68
18. aster0id 24d 20:31:23.64
19.--- empty -----:--
20.--- empty -----:--
Today
1. wyq97 00:05.09
2. Liangem
7
00:09.62
3. gorilla801 00:15.96
4. CLAVDIVS
48
00:16.11
5. Dorice
236
00:21.30
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.
679
00:00.90
2. vowels
214
00:01.07
3. jaybrainer
222
00:01.27
4. numbrr
286
00:01.60
5. Sun Ocean Beach
238
00:01.73
6. qqwref
259
00:01.75
7. EC31
23
00:01.79
8. sfumato
165
00:01.84
9. sauceguardian
95
00:01.86
10. lmsc5k
61
00:01.91
AO5
1. Douglas Shamlin Jr.
679
00:00.96
2. vowels
214
00:01.44
3. jaybrainer
222
00:01.56
4. numbrr
286
00:01.73
5. qqwref
259
00:01.87
6. Sun Ocean Beach
238
00:01.90
7. lmsc5k
61
00:01.92
8. sauceguardian
95
00:01.96
9. Daiwie
79
00:01.97
10. sfumato
165
00:02.01
AO12
1. Douglas Shamlin Jr.
679
00:01.18
2. vowels
214
00:01.81
3. jaybrainer
222
00:02.06
4. numbrr
286
00:02.16
5. Sun Ocean Beach
238
00:02.31
6. sauceguardian
95
00:02.39
7. qqwref
259
00:02.40
8. lmsc5k
61
00:02.49
8. Daiwie
79
00:02.49
10. sfumato
165
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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2025-03-31 20:30:37

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