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. Kenolo353
116
00:10.84
2. lmsc5k
66
00:10.87
3. sauceguardian
103
00:11.35
4. 飞飞
52
00:15.23
5. Irisa
122
00:20.02
6. KarenNotARobot 00:21.02
7. kroller
17
00:27.78
8. randomflyintaco
138
00:28.30
9. qobi
233
00:29.98
10. MushroomsCavern
43
00:31.80
11. AlexanderIII 00:38.36
12. knmidorika
55
00:38.50
13. kornelbut
40
00:38.96
14. gorilla801
1
00:42.32
15. ambiorix 00:43.90
16. CLAVDIVS
70
00:45.28
17. LordHedgie 00:54.11
18. zq
24
00:54.40
19. FunAcroFly
117
00:54.53
20. Koakuma
52
00:58.39
This Week
1. lmsc5k
66
00:10.87
2. sauceguardian
103
00:11.35
3. Kenolo353
116
00:15.01
4. KarenNotARobot 00:21.02
5. qobi
233
00:29.98
6. AlexanderIII 00:38.36
7. kornelbut
40
00:38.96
8. gorilla801
1
00:45.25
9. CLAVDIVS
70
00:45.28
10. ambiorix 01:03.43
11. Koakuma
52
01:12.95
12. RosemaryW 01:18.76
13. Rorschach
11
02:18.92
14. Emzed
50
02:32.93
15.--- empty -----:--
16.--- empty -----:--
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
Today
1. sauceguardian
103
00:11.35
2. Kenolo353
116
00:15.20
3. KarenNotARobot 00:21.02
4. AlexanderIII 00:45.22
5. CLAVDIVS
70
01:03.88
6. Koakuma
52
01:12.95
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.
716
00:06.79
2. Daiwie
95
00:10.18
3. numbrr
306
00:10.41
4. sauceguardian
103
00:11.32
5. TashiroMiraki
217
00:11.43
6. vowels
216
00:11.50
7. lmsc5k
66
00:12.39
8. Kenolo353
116
00:12.96
9. Tunnel Keeper
68
00:13.19
10. jaybrainer
247
00:13.22
AO5
1. Douglas Shamlin Jr.
716
00:07.19
2. Daiwie
95
00:10.62
3. numbrr
306
00:12.12
4. TashiroMiraki
217
00:12.15
5. vowels
216
00:12.18
6. sauceguardian
103
00:12.24
7. lmsc5k
66
00:12.73
8. jaybrainer
247
00:13.55
9. Tunnel Keeper
68
00:13.58
10. Kenolo353
116
00:14.02
AO12
1. Douglas Shamlin Jr.
716
00:08.09
2. Daiwie
95
00:11.20
3. vowels
216
00:12.94
4. numbrr
306
00:13.28
5. sauceguardian
103
00:13.63
6. TashiroMiraki
217
00:13.69
7. lmsc5k
66
00:14.06
8. qqwref
266
00:15.59
9. Kenolo353
116
00:15.82
10. Tunnel Keeper
68
00:16.78
Robots / programmatic solversinfo  
1.Paul Bismuth
1
00:03.495
2.hsjbh
1
01:26.414
3.Chen Enxiu
1
02:28.288

* 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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2026-01-24 21:49:15

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