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°

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Shakashaka


5x5 Shakashaka | 10x10 Shakashaka | 15x15 Shakashaka | 20x20 Shakashaka | 25x25 Shakashaka

This Month
1. lmsc5k
65
00:31.23
2. Kenolo353
114
00:32.25
3. 3328037
60
00:45.81
4. 飞飞
51
00:48.26
5. RaiT
77
00:55.31
6. randomflyintaco
133
00:57.28
7. Wangxuye 01:02.58
8. qobi
232
01:03.44
9. insanebrain 01:08.90
10. zmdpuzzle
31
01:12.00
11. AnonyMinor
64
01:16.77
12. burgie12 01:28.12
13. mrgmath
21
01:30.34
14. yasuyo
3
01:36.67
15. Twuwutu
50
01:50.58
16. Savia
69
02:00.72
17. gorilla801 02:06.04
18. Jazka 02:08.06
19. trLBumm
21
02:08.72
20. ambiorix 02:09.86
This Week
1. Kenolo353
114
00:40.38
2. randomflyintaco
133
01:00.02
3. zmdpuzzle
31
01:12.00
4. AnonyMinor
64
01:16.77
5. mrgmath
21
01:51.17
6. burgie12 01:58.67
7. gorilla801 02:06.04
8. trLBumm
21
02:22.23
9. CLAVDIVS
66
02:36.74
10. RosemaryW 04:26.50
11.--- empty -----:--
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14.--- empty -----:--
15.--- empty -----:--
16.--- empty -----:--
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
Today
1. Kenolo353
114
00:50.31
2. AnonyMinor
64
01:16.77
3. gorilla801 02:06.04
4. trLBumm
21
02:22.23
5. CLAVDIVS
66
02:36.74
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.
714
00:18.49
2. Daiwie
92
00:26.99
3. lmsc5k
65
00:32.03
4. TashiroMiraki
217
00:32.76
5. numbrr
301
00:32.84
6. sauceguardian
102
00:33.14
7. vowels
216
00:34.09
8. gregg__
81
00:35.04
9. home
193
00:36.38
10. Tunnel Keeper
66
00:37.66
AO5
1. Douglas Shamlin Jr.
714
00:19.11
2. Daiwie
92
00:28.02
3. numbrr
301
00:33.90
4. TashiroMiraki
217
00:34.01
5. vowels
216
00:34.10
6. lmsc5k
65
00:34.60
7. sauceguardian
102
00:35.33
8. home
193
00:37.94
9. gregg__
81
00:38.08
10. Tunnel Keeper
66
00:38.89
AO12
1. Douglas Shamlin Jr.
714
00:19.90
2. Daiwie
92
00:29.65
3. TashiroMiraki
217
00:35.62
4. lmsc5k
65
00:37.66
5. vowels
216
00:37.84
6. sauceguardian
102
00:38.49
7. numbrr
301
00:39.34
8. Tunnel Keeper
66
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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2025-11-19 20:10:29

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