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. lmsc5k
62
01:04.51
2. GoldChoco36
133
01:22.71
3. Kenolo353
89
01:24.31
4. randomflyintaco
102
01:53.48
5. Dorice
238
01:59.24
6. 3328037
43
02:00.97
7. Board
73
02:01.93
8. LesAM 02:02.91
9. qobi
221
02:10.21
10. jiugan
62
02:38.09
11. sixgs 03:00.98
12. Pete P
37
03:04.94
13. cpatros 03:23.02
14. swpomeroy
166
03:40.46
15. Jazka 03:58.39
16. BlueBumblebee 04:39.23
17. CLAVDIVS
50
05:31.93
18. zooandroo
90
05:40.19
19. gorilla801 06:25.30
20. jdubs
133
07:09.22
This Week
1. lmsc5k
62
01:04.51
2. Kenolo353
89
01:28.45
3. Dorice
238
02:27.35
4. qobi
221
03:00.22
5. sixgs 03:34.66
6. swpomeroy
166
03:40.46
7. Jazka 04:00.32
8. zooandroo
90
05:40.19
9. CLAVDIVS
50
05:48.57
10. jdubs
133
07:09.22
11.--- empty -----:--
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Today
1. qobi
221
03:17.05
2. CLAVDIVS
50
06:02.15
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.
685
00:36.51
2. Daiwie
83
00:48.09
3. TashiroMiraki
214
00:55.98
4. numbrr
289
00:57.92
5. Tunnel Keeper
62
00:59.85
6. vowels
214
01:00.51
7. lmsc5k
62
01:06.53
8. home
180
01:08.43
9. sauceguardian
95
01:12.38
10. qqwref
259
01:12.68
AO5
1. Douglas Shamlin Jr.
685
00:38.16
2. Daiwie
83
00:48.49
3. TashiroMiraki
214
00:57.30
4. Tunnel Keeper
62
01:00.13
5. numbrr
289
01:00.68
6. vowels
214
01:05.16
7. home
180
01:08.43
8. lmsc5k
62
01:09.37
9. qqwref
259
01:14.12
10. sauceguardian
95
01:14.74
AO12
1. Douglas Shamlin Jr.
685
00:39.23
2. Daiwie
83
00:57.33
3. TashiroMiraki
214
01:01.20
4. Tunnel Keeper
62
01:02.54
5. numbrr
289
01:07.40
6. vowels
214
01:08.91
7. lmsc5k
62
01:13.90
8. sauceguardian
95
01:18.45
9. home
180
01:21.63
10. qqwref
259
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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2025-04-30 07:35:54

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