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
99
00:01.29
2. Kenolo353
107
00:02.08
3. marbleeeee 00:02.50
4. Goomy
120
00:02.73
5. Heqnry 00:03.02
6. YoungNam 00:03.19
7. insanebrain 00:03.32
8. randomflyintaco
116
00:03.37
9. KarasuKarasu 00:03.41
10. Dorice
245
00:03.48
11. Parker2278
24
00:03.86
12. H1GHM0RE
8
00:03.98
13. syxxnul 00:04.31
14. kennethaw88
148
00:04.33
15. La22y 00:04.88
16. mrgmath
9
00:04.99
17. AlexanderIII 00:05.01
18. xc0xupx
38
00:05.51
18. FunAcroFly
86
00:05.51
20. KETJAK
33
00:06.12
This Week
1. Kenolo353
107
00:02.38
2. Goomy
120
00:02.73
3. KarasuKarasu 00:03.41
4. randomflyintaco
116
00:03.89
5. La22y 00:04.88
6. Dorice
245
00:04.91
7. Demeris 00:06.83
8. CLAVDIVS
60
00:10.33
9. gorilla801 00:10.62
10. IL0v3N0n0s 00:11.63
11. Dylan61 00:12.58
12. Suball
15
00:15.74
13. KristinaY
9
00:19.69
14. RosemaryW 00:22.29
15. 4thPortal 00:25.07
16. MANUWIND 00:31.85
17. cyanbao
23
00:44.58
18. DaAmateurSolver 00:58.90
19. LLL159 01:55.71
20.--- empty -----:--
Today
1. randomflyintaco
116
00:04.47
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.
703
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
99
00:01.75
6. qqwref
260
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.
703
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
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.
703
00:01.18
2. vowels
216
00:01.81
3. jaybrainer
240
00:02.06
4. numbrr
300
00:02.16
5. sauceguardian
99
00:02.28
6. SunOceanBeach
260
00:02.31
7. qqwref
260
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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2025-08-27 01:57:50

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