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
104
00:01.15
2. Kenolo353
118
00:01.84
3. KETJAK
36
00:02.84
3. zhouOB 00:02.84
5. 3328037
66
00:03.07
6. kroller
18
00:03.13
7. qobi
234
00:03.65
8. Rhododendron
149
00:03.86
9. Avalon 00:04.17
10. JudithL
19
00:04.29
11. real_ego_87
31
00:04.38
12. MushroomsCavern
54
00:04.44
13. KarenNotARobot 00:04.61
14. tooyoung 00:04.63
15. yyyyyyyejin
104
00:05.24
16. Edmundddo 00:05.33
17. Rubelino33
22
00:05.34
18. May John
96
00:05.55
19. MarlingMath 00:05.59
20. shfrUwU
7
00:05.62
This Week
1. Kenolo353
118
00:02.42
2. 3328037
66
00:03.07
3. Edmundddo 00:05.33
4. Rubelino33
22
00:05.34
5. shfrUwU
7
00:08.92
6. HackMan
122
00:09.02
7. TrimTom2
15
00:09.26
8. gorilla801
1
00:09.29
9. CLAVDIVS
72
00:12.81
10. Hwn
3
00:13.46
11. Matiaus
9
00:13.47
12. Itseemslikeme 00:13.66
13. Axiomatically_confus...
27
00:19.47
14. drbop
48
00:20.71
15. Strider500
103
03:48.80
16. Uthor 24d 20:31:23.64
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
Today
1. Kenolo353
118
00:02.81
2. Itseemslikeme 00:13.66
3. CLAVDIVS
72
00:17.05
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.
717
00:00.90
2. vowels
216
00:01.07
3. jaybrainer
252
00:01.16
4. numbrr
308
00:01.60
5. sauceguardian
104
00:01.69
6. SunOceanBeach
260
00:01.73
7. qqwref
266
00:01.75
8. EC31
23
00:01.79
9. sfumato
166
00:01.84
10. lmsc5k
66
00:01.91
AO5
1. Douglas Shamlin Jr.
717
00:00.96
2. vowels
216
00:01.44
3. jaybrainer
252
00:01.56
4. numbrr
308
00:01.73
5. sauceguardian
104
00:01.82
6. qqwref
266
00:01.87
7. SunOceanBeach
260
00:01.90
8. lmsc5k
66
00:01.92
9. Daiwie
96
00:01.97
10. sfumato
166
00:02.01
AO12
1. Douglas Shamlin Jr.
717
00:01.18
2. vowels
216
00:01.81
3. jaybrainer
252
00:01.99
4. numbrr
308
00:02.16
5. sauceguardian
104
00:02.28
6. SunOceanBeach
260
00:02.31
7. qqwref
266
00:02.40
8. lmsc5k
66
00:02.49
8. Daiwie
96
00:02.49
10. sfumato
166
00:02.51
Robots / programmatic solversinfo  
1.Paul Bismuth
1
00:02.066
2.kanaderu
1
00:03.677
3.liaohanlin888
1
00:09.128

* 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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2026-02-26 11:19:53

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