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
64
01:00.62
2. sauceguardian
100
01:12.08
3. Kenolo353
111
01:16.01
4. randomflyintaco
124
01:43.32
5. Wangxuye 01:47.87
6. marbleeeee 01:54.43
7. Dorice
250
01:54.52
8. qobi
231
02:18.34
9. RaiAT
62
02:37.37
10. AnonyMinor
60
02:37.55
11. Demeris 03:18.46
12. gorilla801 04:41.16
13. CLAVDIVS
64
04:41.34
14. Wuni14 04:42.74
15. mrgmath
15
05:15.30
16. Tartempion 06:36.25
17. Koakuma
49
09:04.75
18. wellwhynot
69
09:11.56
19. aeunchae
8
13:34.18
20. Skemmer 15:06.55
This Week
1. sauceguardian
100
01:12.08
2. Kenolo353
111
01:16.43
3. randomflyintaco
124
01:50.91
4. Dorice
250
01:54.52
5. qobi
231
02:18.34
6. RaiAT
62
02:37.37
7. AnonyMinor
60
03:04.97
8. gorilla801 05:03.52
9. mrgmath
15
05:15.30
10. Tartempion 06:36.25
11. wellwhynot
69
09:11.56
12. Skemmer 15:06.55
13. Candy Player
1
1:15:15.40
14. Adam8472
21
24d 20:31:23.64
14. slyguy519
57
24d 20:31:23.64
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20.--- empty -----:--
Today
1. Kenolo353
111
01:32.32
2.--- empty -----:--
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.
711
00:36.51
2. Daiwie
90
00:48.09
3. TashiroMiraki
216
00:55.98
4. numbrr
300
00:57.92
5. Tunnel Keeper
64
00:59.85
6. vowels
216
01:00.51
7. lmsc5k
64
01:06.53
8. home
192
01:08.43
9. sauceguardian
100
01:12.38
10. qqwref
260
01:12.68
AO5
1. Douglas Shamlin Jr.
711
00:38.16
2. Daiwie
90
00:48.49
3. TashiroMiraki
216
00:57.30
4. Tunnel Keeper
64
01:00.13
5. numbrr
300
01:00.68
6. vowels
216
01:05.16
7. home
192
01:08.43
8. lmsc5k
64
01:08.89
9. qqwref
260
01:14.12
10. sauceguardian
100
01:14.42
AO12
1. Douglas Shamlin Jr.
711
00:39.23
2. Daiwie
90
00:57.33
3. TashiroMiraki
216
01:01.20
4. Tunnel Keeper
64
01:02.54
5. numbrr
300
01:07.40
6. vowels
216
01:08.91
7. lmsc5k
64
01:13.90
8. sauceguardian
100
01:18.45
9. home
192
01:21.63
10. qqwref
260
01:22.02
Robots / programmatic solversinfo  
1.kanaderu
1
04:45.694
2.dansto76510:53.339
3.Chen Enxiu
1
17:46.098

* 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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2025-10-05 06:06:35

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