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. KarenNotARobot 00:02.08
2. MoFan
113
00:02.15
2. GoldChoco36
133
00:02.15
4. sauceguardian
95
00:02.52
5. Kenolo353
89
00:02.59
6. Board
73
00:02.62
7. Dorice
238
00:02.99
8. Cinder_F
9
00:03.30
9. wangzimoxx
15
00:03.38
10. Frog The Toast
54
00:03.62
11. randomflyintaco
102
00:03.84
12. AMQUACK 00:04.09
13. Lambchops
29
00:04.15
14. qobi
221
00:04.22
15. FlYHouse 00:04.86
16. j3573r 00:04.87
17. wyq97 00:05.09
18. dbxhsjn
5
00:05.74
19. TQ-V85Sn
80
00:05.95
19. 预防老年痴呆
5
00:05.95
This Week
1. Kenolo353
89
00:02.80
2. Board
73
00:03.29
3. Lambchops
29
00:04.15
4. qobi
221
00:04.85
5. j3573r 00:04.87
6. TQ-V85Sn
80
00:05.95
7. AkiyamaMizuki 00:08.12
8. gorilla801 00:13.63
9. ShaneTheSloth
2
00:15.02
10. CLAVDIVS
49
00:17.51
11. ropinag
3
00:19.41
12. asatzhh
15
00:19.44
13. ScorpionMax 00:40.35
14. flukie 01:09.67
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Today
1. Kenolo353
89
00:03.22
2.--- empty -----:--
3.--- empty -----:--
4.--- empty -----:--
5.--- empty -----:--
6.--- empty -----:--
7.--- empty -----:--
8.--- empty -----:--
9.--- empty -----:--
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MO3
1. Douglas Shamlin Jr.
684
00:00.90
2. vowels
214
00:01.07
3. jaybrainer
225
00:01.27
4. numbrr
289
00:01.60
5. Sun Ocean Beach
239
00:01.73
6. qqwref
259
00:01.75
7. EC31
23
00:01.79
8. sfumato
166
00:01.84
9. sauceguardian
95
00:01.86
10. lmsc5k
62
00:01.91
AO5
1. Douglas Shamlin Jr.
684
00:00.96
2. vowels
214
00:01.44
3. jaybrainer
225
00:01.56
4. numbrr
289
00:01.73
5. qqwref
259
00:01.87
6. Sun Ocean Beach
239
00:01.90
7. lmsc5k
62
00:01.92
8. sauceguardian
95
00:01.96
9. Daiwie
81
00:01.97
10. sfumato
166
00:02.01
AO12
1. Douglas Shamlin Jr.
684
00:01.18
2. vowels
214
00:01.81
3. jaybrainer
225
00:02.06
4. numbrr
289
00:02.16
5. Sun Ocean Beach
239
00:02.31
6. sauceguardian
95
00:02.39
7. qqwref
259
00:02.40
8. lmsc5k
62
00:02.49
8. Daiwie
81
00:02.49
10. sfumato
166
00:02.51
Robots / programmatic solversinfo  
1.kanaderu
1
00:03.677
2.tari77
1
00:11.623
3.sysd
1
00:12.419

* 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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2025-04-24 14:56:42

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