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
64
01:02.57
2. Kenolo353
113
01:07.00
3. sauceguardian
101
01:12.08
4. randomflyintaco
128
01:50.91
5. Dorice
253
01:55.97
6. insanebrain 02:01.84
7. qobi
232
02:18.34
8. AnonyMinor
62
02:40.60
9. SakyhyKaren 03:56.14
10. mrgmath
19
04:18.15
11. gorilla801 04:23.29
12. maufufu
25
04:56.09
13. Ketone1121
15
05:05.77
14. MelonDude
9
05:45.26
15. CLAVDIVS
65
05:51.51
16. aaaaaa22222 06:56.73
17. Peanutmobile
26
07:21.42
18. RosemaryW 07:48.67
19. trLBumm
19
08:07.84
20. wellwhynot
70
09:11.56
This Week
1. lmsc5k
64
01:02.57
2. Kenolo353
113
01:07.00
3. insanebrain 02:01.84
4. randomflyintaco
128
02:14.15
5. AnonyMinor
62
02:40.60
6. gorilla801 04:33.30
7. CLAVDIVS
65
05:51.51
8. mrgmath
19
06:40.82
9. RosemaryW 07:48.67
10. trLBumm
19
12:21.60
11. 신동근
11
12:41.39
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Today
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5.--- empty -----:--
6.--- empty -----:--
7.--- empty -----:--
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16.--- empty -----:--
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20.--- empty -----:--
MO3
1. Douglas Shamlin Jr.
714
00:36.51
2. Daiwie
92
00:48.09
3. TashiroMiraki
217
00:55.98
4. numbrr
301
00:57.92
5. Tunnel Keeper
65
00:59.85
6. vowels
216
01:00.51
7. lmsc5k
64
01:05.28
8. home
192
01:08.43
9. sauceguardian
101
01:12.38
10. qqwref
261
01:12.68
AO5
1. Douglas Shamlin Jr.
714
00:38.16
2. Daiwie
92
00:48.49
3. TashiroMiraki
217
00:57.30
4. Tunnel Keeper
65
01:00.13
5. numbrr
301
01:00.68
6. vowels
216
01:05.16
7. lmsc5k
64
01:06.46
8. home
192
01:08.43
9. qqwref
261
01:14.12
10. sauceguardian
101
01:14.42
AO12
1. Douglas Shamlin Jr.
714
00:39.23
2. Daiwie
92
00:57.33
3. TashiroMiraki
217
01:01.20
4. Tunnel Keeper
65
01:02.54
5. numbrr
301
01:07.40
6. vowels
216
01:08.91
7. lmsc5k
64
01:11.49
8. sauceguardian
101
01:18.45
9. home
192
01:21.63
10. qqwref
261
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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2025-10-31 05:36:56

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