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. sauceguardian
99
00:32.05
2. gregg__
77
00:33.47
3. Kenolo353
107
00:37.59
4. randomflyintaco
115
00:55.94
5. Dorice
245
00:56.03
6. qobi
229
01:10.95
7. insanebrain 01:18.13
8. burgie12 01:33.18
9. Parker2278
23
01:34.21
10. Usher BArCs
49
01:36.31
11. AnonyMinor
55
01:50.13
12. sixgs 01:54.26
13. AlexanderIII 01:54.76
14. ambiorix 02:02.94
15. SakyhyKaren 02:07.85
16. yasuyo 02:13.76
17. cblizza1 02:16.11
18. H1GHM0RE
8
02:19.41
19. CLAVDIVS
59
02:20.72
20. xc0xupx
38
02:21.93
This Week
1. sauceguardian
99
00:40.02
2. Kenolo353
107
00:40.77
3. randomflyintaco
115
00:55.94
4. Dorice
245
00:56.03
5. insanebrain 01:18.13
6. burgie12 01:33.18
7. Parker2278
23
01:34.21
8. ambiorix 02:02.94
9. SakyhyKaren 02:07.85
10. cblizza1 02:16.11
11. CLAVDIVS
59
02:20.72
12. gorilla801 02:35.41
13. Tartempion 03:57.47
14. drbop
44
21:09.10
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Today
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MO3
1. Douglas Shamlin Jr.
702
00:18.49
2. Daiwie
88
00:26.99
3. lmsc5k
63
00:32.03
4. TashiroMiraki
216
00:32.76
5. numbrr
298
00:32.84
6. sauceguardian
99
00:33.14
7. vowels
216
00:34.09
8. gregg__
77
00:35.04
9. home
192
00:36.38
10. Tunnel Keeper
64
00:37.66
AO5
1. Douglas Shamlin Jr.
702
00:19.11
2. Daiwie
88
00:28.02
3. numbrr
298
00:33.90
4. TashiroMiraki
216
00:34.01
5. vowels
216
00:34.10
6. lmsc5k
63
00:34.60
7. sauceguardian
99
00:35.33
8. home
192
00:37.94
9. gregg__
77
00:38.08
10. Tunnel Keeper
64
00:38.89
AO12
1. Douglas Shamlin Jr.
702
00:19.90
2. Daiwie
88
00:29.65
3. TashiroMiraki
216
00:35.62
4. lmsc5k
63
00:37.66
5. vowels
216
00:37.84
6. sauceguardian
99
00:38.49
7. numbrr
298
00:39.34
8. Tunnel Keeper
64
00:41.99
9. MEGACHEESE
76
00:42.48
10. siri
40
00:42.55
Robots / programmatic solversinfo  
1.GrodGruffalo00:57.455
2.lucaskao03:28.523
3.tari77
1
04:04.574

* 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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2025-08-21 02:31:12

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