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. sauceguardian
99
00:11.33
2. Kenolo353
106
00:15.99
3. randomflyintaco
114
00:18.99
4. marbleeeee 00:19.01
5. KarenNotARobot 00:20.46
6. kennethaw88
148
00:21.33
7. Dorice
244
00:23.00
8. insanebrain 00:24.64
9. qobi
229
00:28.61
10. AlexanderIII 00:33.92
11. xc0xupx
38
00:36.94
12. gorilla801 00:41.82
13. Yester 00:43.44
14. wyq97 00:45.40
15. ambiorix 00:46.22
16. AnonyMinor
55
00:48.16
17. Nmiss 00:50.17
18. sixgs 00:55.46
19. CLAVDIVS
59
00:58.40
20. drbop
44
01:01.22
This Week
1. Kenolo353
106
00:17.74
2. KarenNotARobot 00:20.46
3. randomflyintaco
114
00:22.73
4. Dorice
244
00:23.00
5. insanebrain 00:25.65
6. AlexanderIII 00:33.92
7. ambiorix 00:46.22
8. Nmiss 00:50.17
9. gorilla801 00:51.02
10. CLAVDIVS
59
00:59.34
11. Tartempion 01:13.99
12. FunAcroFly
82
01:33.36
13. zwh08
5
02:07.17
14. SakyhyKaren 02:32.57
15. Drongo
10
02:45.62
16. RosemaryW 04:00.05
17. slyguy519
53
24d 20:31:23.64
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
Today
1. KarenNotARobot 00:25.66
2. randomflyintaco
114
00:34.27
3. AlexanderIII 00:47.39
4. zwh08
5
02:07.17
5. Drongo
10
02:45.62
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.
700
00:06.79
2. Daiwie
88
00:10.18
3. numbrr
298
00:10.41
4. sauceguardian
99
00:11.32
5. TashiroMiraki
216
00:11.43
6. vowels
216
00:11.50
7. lmsc5k
63
00:12.39
8. Tunnel Keeper
63
00:13.19
9. jaybrainer
240
00:13.22
10. sfumato
166
00:13.88
AO5
1. Douglas Shamlin Jr.
700
00:07.19
2. Daiwie
88
00:10.62
3. numbrr
298
00:12.12
4. TashiroMiraki
216
00:12.15
5. vowels
216
00:12.18
6. sauceguardian
99
00:12.24
7. lmsc5k
63
00:12.73
8. jaybrainer
240
00:13.55
9. Tunnel Keeper
63
00:13.58
10. qqwref
260
00:14.27
AO12
1. Douglas Shamlin Jr.
700
00:08.09
2. Daiwie
88
00:11.20
3. vowels
216
00:12.94
4. numbrr
298
00:13.28
5. sauceguardian
99
00:13.63
6. TashiroMiraki
216
00:13.69
7. lmsc5k
63
00:14.06
8. qqwref
260
00:15.59
9. Tunnel Keeper
63
00:16.78
10. jaybrainer
240
00:16.91
Robots / programmatic solversinfo  
1.hsjbh
1
01:26.414
2.Chen Enxiu
1
02:28.288
3.sysd
1
03:16.357

* 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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2025-08-17 08:49:50

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