Shakashaka


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Special thanks to Aevrin for the translation

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°

Video Tutorial
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Shakashaka


5x5 Shakashaka | 10x10 Shakashaka | 15x15 Shakashaka | 20x20 Shakashaka | 25x25 Shakashaka

This Month
1. marbleeeee 00:01.19
2. sauceguardian
98
00:01.20
3. Kenolo353
104
00:02.23
4. syxxnul 00:02.88
5. randomflyintaco
112
00:03.03
6. KarasuKarasu 00:03.74
7. insanebrain 00:04.02
8. exformation
33
00:04.21
8. Auvergne 00:04.21
10. qobi
228
00:04.78
11. Chaojie Fu
66
00:05.05
12. Dorice
242
00:05.21
13. Liewen Chen
8
00:05.70
14. FunAcroFly
77
00:06.20
15. LesAM 00:06.29
16. Astral
22
00:07.20
17. doctorbutterfly
11
00:08.18
18. gorilla801 00:08.56
19. mrgmath
6
00:08.81
20. sixgs 00:09.04
This Week
1. sauceguardian
98
00:01.66
2. marbleeeee 00:01.86
3. syxxnul 00:02.88
4. randomflyintaco
112
00:03.03
5. Kenolo353
104
00:03.06
6. qobi
228
00:05.31
7. LesAM 00:06.29
8. gorilla801 00:09.87
9. all-trees
17
00:11.14
10. CLAVDIVS
57
00:11.78
11. sixgs 00:13.78
12. RosemaryW 00:22.09
13. RineandYou 00:29.36
14. yvhkgys
24
00:38.42
15.--- empty -----:--
16.--- empty -----:--
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
Today
1. Kenolo353
104
00:03.78
2. randomflyintaco
112
00:04.21
3. CLAVDIVS
57
00:13.67
4. sixgs 00:13.78
5. gorilla801 00:14.40
6. yvhkgys
24
00:38.42
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.
694
00:00.90
2. vowels
216
00:01.07
3. jaybrainer
239
00:01.16
4. numbrr
297
00:01.60
5. SunOceanBeach
260
00:01.73
6. sauceguardian
98
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.
694
00:00.96
2. vowels
216
00:01.44
3. jaybrainer
239
00:01.56
4. numbrr
297
00:01.73
5. qqwref
259
00:01.87
6. SunOceanBeach
260
00:01.90
7. lmsc5k
63
00:01.92
8. sauceguardian
98
00:01.94
9. Daiwie
87
00:01.97
10. sfumato
166
00:02.01
AO12
1. Douglas Shamlin Jr.
694
00:01.18
2. vowels
216
00:01.81
3. jaybrainer
239
00:02.06
4. numbrr
297
00:02.16
5. sauceguardian
98
00:02.28
6. SunOceanBeach
260
00:02.31
7. qqwref
259
00:02.40
8. lmsc5k
63
00:02.49
8. Daiwie
87
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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2025-07-26 02:19:19

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