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°

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Shakashaka


5x5 Shakashaka | 10x10 Shakashaka | 15x15 Shakashaka | 20x20 Shakashaka | 25x25 Shakashaka

This Month
1. sauceguardian
94
00:01.06
2. Sun Ocean Beach
235
00:01.61
3. Goomy
80
00:02.19
4. RobMMMMMM 00:02.78
5. lmsc5k
59
00:03.05
6. EC31
23
00:03.13
7. giotskh
146
00:03.16
8. KarenNotARobot 00:03.18
9. Dorice
229
00:03.69
10. A weird sloth
12
00:03.80
11. geyik
177
00:03.88
12. qobi
213
00:04.34
13. FlYHouse 00:04.50
14. Board
64
00:04.53
15. BOOMBY 00:04.77
16. randomflyintaco
93
00:04.96
17. Korneel 00:05.07
18. zhouOB 00:05.28
19. Savia
66
00:05.72
20. jpyxel 00:05.95
This Week
1. KarenNotARobot 00:03.18
2. Dorice
229
00:04.16
3. qobi
213
00:04.41
4. FlYHouse 00:04.50
5. randomflyintaco
93
00:04.96
6. Korneel 00:08.08
7. Chaojie Fu
60
00:08.36
8. TheKraken47
8
00:08.88
9. gorilla801 00:11.51
10. CLAVDIVS
41
00:14.35
11. BohousKidd 00:25.25
12. wellwhynot
64
00:25.68
13. Naimo
1
01:32.81
14. 吕德淞
3
03:14.66
15.--- empty -----:--
16.--- empty -----:--
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
Today
1. qobi
213
00:09.19
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.
666
00:00.90
2. vowels
214
00:01.07
3. jaybrainer
213
00:01.27
4. numbrr
276
00:01.60
5. Sun Ocean Beach
235
00:01.73
6. qqwref
259
00:01.75
7. EC31
23
00:01.79
8. sfumato
165
00:01.84
9. sauceguardian
94
00:01.86
10. lmsc5k
59
00:01.91
AO5
1. Douglas Shamlin Jr.
666
00:00.96
2. vowels
214
00:01.44
3. jaybrainer
213
00:01.56
4. numbrr
276
00:01.73
5. qqwref
259
00:01.87
6. Sun Ocean Beach
235
00:01.90
7. lmsc5k
59
00:01.92
8. sauceguardian
94
00:01.96
9. sfumato
165
00:02.01
10. EC31
23
00:02.20
AO12
1. Douglas Shamlin Jr.
666
00:01.18
2. vowels
214
00:01.81
3. jaybrainer
213
00:02.06
4. numbrr
276
00:02.16
5. Sun Ocean Beach
235
00:02.31
6. sauceguardian
94
00:02.39
7. qqwref
259
00:02.40
8. lmsc5k
59
00:02.49
9. sfumato
165
00:02.51
10. TashiroMiraki
212
00:02.56
Robots / programmatic solversinfo  
1.kanaderu
1
00:03.677
2.tari77
1
00:11.623
3.Sophieee00:28.996

* 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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2025-01-28 01:59:59

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