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. sauceguardian
99
00:01.36
2. marbleeeee 00:01.68
3. Kenolo353
106
00:02.08
4. syxxnul 00:02.88
5. randomflyintaco
114
00:03.03
6. insanebrain 00:03.32
7. Dorice
244
00:03.48
8. H1GHM0RE
8
00:03.98
9. Parker2278
22
00:04.17
10. kennethaw88
148
00:04.33
11. AlexanderIII 00:05.01
12. qobi
229
00:05.31
13. xc0xupx
38
00:05.51
13. FunAcroFly
81
00:05.51
15. KETJAK
32
00:06.12
16. LesAM 00:06.29
17. Chaojie Fu
66
00:06.51
18. mrgmath
8
00:06.95
19. gorilla801 00:07.77
20. gemmaavv
34
00:09.41
This Week
1. Kenolo353
106
00:02.08
2. insanebrain 00:03.32
3. randomflyintaco
114
00:03.37
4. Dorice
244
00:03.48
5. Parker2278
22
00:04.17
6. FunAcroFly
81
00:05.51
7. gorilla801 00:07.77
8. Nmiss 00:11.07
9. CLAVDIVS
59
00:11.89
10. IL0v3N0n0s 00:14.73
11. mrgmath
8
00:17.39
12. SakyhyKaren 00:18.93
13. Cocoatwix
5
00:23.00
14. wuliaoderen 00:26.26
15. RosemaryW 00:26.78
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20.--- empty -----:--
Today
1. Parker2278
22
00:04.17
2.--- empty -----:--
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.
700
00:00.90
2. vowels
216
00:01.07
3. jaybrainer
239
00:01.16
4. numbrr
298
00:01.60
5. SunOceanBeach
260
00:01.73
6. sauceguardian
99
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.
700
00:00.96
2. vowels
216
00:01.44
3. jaybrainer
239
00:01.56
4. numbrr
298
00:01.73
5. qqwref
259
00:01.87
6. SunOceanBeach
260
00:01.90
7. lmsc5k
63
00:01.92
8. sauceguardian
99
00:01.94
9. Daiwie
88
00:01.97
10. sfumato
166
00:02.01
AO12
1. Douglas Shamlin Jr.
700
00:01.18
2. vowels
216
00:01.81
3. jaybrainer
239
00:02.06
4. numbrr
298
00:02.16
5. sauceguardian
99
00:02.28
6. SunOceanBeach
260
00:02.31
7. qqwref
259
00:02.40
8. lmsc5k
63
00:02.49
8. Daiwie
88
00:02.49
10. sfumato
166
00:02.51
Robots / programmatic solversinfo  
1.kanaderu
1
00:03.677
2.liaohanlin888
1
00:09.128
3.tari77
1
00:11.623

* 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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2025-08-16 03:25:58

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