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. RealShrimp 00:01.62
2. kennethaw88
151
00:01.68
3. Wangxuye 00:02.11
4. Kenolo353
112
00:02.12
5. RaiAT
64
00:02.34
6. randomflyintaco
124
00:02.81
7. YoungNam 00:03.05
8. all-trees
44
00:03.14
9. Dorice
250
00:03.45
10. kamikazi
22
00:03.71
11. qobi
231
00:03.97
12. mrgmath
15
00:04.50
13. Heqnry 00:04.75
14. trLBumm
16
00:04.87
15. AlexanderIII 00:05.34
16. S Otenkiya
55
00:05.55
17. EdenGameMaster
24
00:05.66
18. gorilla801 00:05.83
19. AnonyMinor
60
00:05.96
20. Cricketwithagun
14
00:05.97
This Week
1. Kenolo353
112
00:02.12
2. RaiAT
64
00:02.34
3. randomflyintaco
124
00:02.81
4. mrgmath
15
00:04.50
5. S Otenkiya
55
00:05.55
6. EdenGameMaster
24
00:05.66
7. CreeperCrazy13 00:07.10
8. yasuyo 00:09.08
9. gorilla801 00:09.19
10. Candy Player
3
00:09.72
11. CLAVDIVS
64
00:09.78
12. wellwhynot
69
00:11.30
13. eRogue
39
00:11.76
14. slyguy519
57
00:16.85
15. RosemaryW 00:22.09
16. Uthor 01:18.58
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
Today
1. Kenolo353
112
00:03.02
2. gorilla801 00:14.31
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.
712
00:00.90
2. vowels
216
00:01.07
3. jaybrainer
241
00:01.16
4. numbrr
300
00:01.60
5. SunOceanBeach
260
00:01.73
6. sauceguardian
101
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.
712
00:00.96
2. vowels
216
00:01.44
3. jaybrainer
241
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
101
00:01.94
9. Daiwie
90
00:01.97
10. sfumato
166
00:02.01
AO12
1. Douglas Shamlin Jr.
712
00:01.18
2. vowels
216
00:01.81
3. jaybrainer
241
00:02.06
4. numbrr
300
00:02.16
5. sauceguardian
101
00:02.28
6. SunOceanBeach
260
00:02.31
7. qqwref
260
00:02.40
8. lmsc5k
64
00:02.49
8. Daiwie
90
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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2025-10-08 11:44:33

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