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
100
00:01.29
2. kennethaw88
150
00:01.68
3. marbleeeee 00:02.17
4. Kenolo353
110
00:02.38
5. Goomy
122
00:02.73
6. insanebrain 00:02.77
7. Pablo The Penguin
13
00:02.82
8. Heqnry 00:03.02
9. YoungNam 00:03.05
10. KarasuKarasu 00:03.41
11. trLBumm
12
00:03.58
12. RaiAT
56
00:03.74
13. Parker2278
24
00:03.86
14. randomflyintaco
120
00:03.89
15. qobi
230
00:03.97
16. Dorice
247
00:04.03
17. FunAcroFly
94
00:04.85
18. La22y 00:04.88
19. mrgmath
12
00:04.99
20. 유진
34
00:05.10
This Week
1. Kenolo353
110
00:02.80
2. Heqnry 00:04.75
3. randomflyintaco
120
00:05.00
4. Cricketwithagun
2
00:05.97
5. kroller
5
00:06.49
6. CLAVDIVS
62
00:08.76
7. Koakuma
49
00:10.04
8. gorilla801 00:10.13
9. hhhhhde
4
00:12.35
10. Hiro Lynx
37
00:17.70
11. ColMustard
3
00:18.23
12. ony
19
00:21.83
13. Educated-cat
11
00:25.35
14. Grymhar 00:32.61
15. Kaasjes
6
00:45.79
16. 31415962
27
01:00.86
17. Mitsimi 01:03.55
18. FcraigNI
42
01:11.22
19.--- empty -----:--
20.--- empty -----:--
Today
1. Kenolo353
110
00:03.40
2. CLAVDIVS
62
00:15.07
3. ColMustard
3
00:18.23
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.
709
00:00.90
2. vowels
216
00:01.07
3. jaybrainer
240
00:01.16
4. numbrr
300
00:01.60
5. SunOceanBeach
260
00:01.73
6. sauceguardian
100
00:01.75
6. qqwref
260
00:01.75
8. EC31
23
00:01.79
9. sfumato
166
00:01.84
10. lmsc5k
64
00:01.91
AO5
1. Douglas Shamlin Jr.
709
00:00.96
2. vowels
216
00:01.44
3. jaybrainer
240
00:01.56
4. numbrr
300
00:01.73
5. qqwref
260
00:01.87
6. SunOceanBeach
260
00:01.90
7. lmsc5k
64
00:01.92
8. sauceguardian
100
00:01.94
9. Daiwie
89
00:01.97
10. sfumato
166
00:02.01
AO12
1. Douglas Shamlin Jr.
709
00:01.18
2. vowels
216
00:01.81
3. jaybrainer
240
00:02.06
4. numbrr
300
00:02.16
5. sauceguardian
100
00:02.28
6. SunOceanBeach
260
00:02.31
7. qqwref
260
00:02.40
8. lmsc5k
64
00:02.49
8. Daiwie
89
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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2025-09-17 23:17:47

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