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
65
00:31.23
2. Kenolo353
115
00:32.25
3. 3328037
61
00:39.99
4. 飞飞
51
00:48.26
5. insanebrain 00:55.16
6. RaiT
78
00:55.31
7. Dorice
255
00:56.96
8. randomflyintaco
134
00:57.28
9. qobi
232
01:03.44
10. zmdpuzzle
31
01:12.00
11. AnonyMinor
64
01:16.77
12. homer 01:22.41
13. burgie12 01:28.60
14. mrgmath
23
01:30.34
15. yasuyo
3
01:36.67
16. gorilla801 01:52.54
17. Savia
69
02:00.72
18. Jazka 02:08.06
19. ambiorix 02:08.46
20. trLBumm
21
02:08.72
This Week
1. Kenolo353
115
00:38.23
2. 3328037
61
00:39.99
3. insanebrain 00:55.16
4. Dorice
255
00:56.96
5. randomflyintaco
134
00:59.73
6. AnonyMinor
64
01:16.77
7. homer 01:22.41
8. burgie12 01:40.30
9. mrgmath
23
01:42.81
10. gorilla801 01:52.54
11. ambiorix 02:08.46
12. trLBumm
21
02:22.23
13. CLAVDIVS
66
02:36.74
14. epicuro
6
02:54.34
15. RosemaryW 03:47.99
16. wam3988 07:43.24
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
Today
1. Kenolo353
115
00:44.15
2. trLBumm
21
03:51.58
3. RosemaryW 06:25.68
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.
715
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.
715
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.
715
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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2025-11-25 06:20:23

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