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
97
00:01.20
2. SunOceanBeach
259
00:01.62
3. marbleeeee 00:01.64
4. Kenolo353
102
00:01.91
5. thecymbalsguy 00:02.31
6. randomflyintaco
108
00:02.44
7. KarasuKarasu 00:03.74
8. qobi
227
00:03.75
9. Polaris.
13
00:03.85
10. insanebrain 00:04.02
11. Auvergne 00:04.21
12. syxxnul 00:04.67
13. takver 00:04.84
14. Board
75
00:05.85
15. Chaojie Fu
65
00:06.00
16. FunAcroFly
75
00:06.20
17. Dorice
242
00:06.69
18. Astral
22
00:07.20
19. yyyyyyyejin
72
00:07.67
20. KETJAK
32
00:07.83
This Week
1. sauceguardian
97
00:01.20
2. marbleeeee 00:02.31
3. Kenolo353
102
00:02.33
4. KarasuKarasu 00:03.74
5. randomflyintaco
108
00:03.91
6. insanebrain 00:04.02
7. Auvergne 00:04.21
8. syxxnul 00:04.67
9. FunAcroFly
75
00:06.20
10. Liewen Chen
8
00:07.95
11. doctorbutterfly
8
00:08.18
12. sixgs 00:09.04
13. cleanerhuang
2
00:11.33
14. KMG123456789 00:11.35
15. gorilla801 00:11.63
16. CLAVDIVS
56
00:14.81
17. Anna Redzik
42
00:29.84
18. Ketone1121
11
00:49.45
19. Raymond Klassen
4
00:54.63
20. lukbebalduke 03:40.31
Today
1. syxxnul 00:04.67
2. randomflyintaco
108
00:05.34
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.
693
00:00.90
2. vowels
216
00:01.07
3. jaybrainer
237
00:01.16
4. numbrr
297
00:01.60
5. SunOceanBeach
259
00:01.73
6. sauceguardian
97
00:01.75
6. qqwref
259
00:01.75
8. EC31
23
00:01.79
9. sfumato
166
00:01.84
10. lmsc5k
63
00:01.91
AO5
1. Douglas Shamlin Jr.
693
00:00.96
2. vowels
216
00:01.44
3. jaybrainer
237
00:01.56
4. numbrr
297
00:01.73
5. qqwref
259
00:01.87
6. SunOceanBeach
259
00:01.90
7. lmsc5k
63
00:01.92
8. sauceguardian
97
00:01.94
9. Daiwie
86
00:01.97
10. sfumato
166
00:02.01
AO12
1. Douglas Shamlin Jr.
693
00:01.18
2. vowels
216
00:01.81
3. jaybrainer
237
00:02.06
4. numbrr
297
00:02.16
5. sauceguardian
97
00:02.28
6. SunOceanBeach
259
00:02.31
7. qqwref
259
00:02.40
8. lmsc5k
63
00:02.49
8. Daiwie
86
00:02.49
10. sfumato
166
00:02.51
Robots / programmatic solversinfo  
1.kanaderu
1
00:03.677
2.tari77
1
00:11.623
3.sysd
1
00:12.419

* 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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2025-07-13 06:55:38

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