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. Kenolo353
115
00:14.01
2. marbleeeee 00:14.60
3. KarenNotARobot 00:17.88
4. CosmX
93
00:19.58
5. randomflyintaco
136
00:21.00
6. Dorice
257
00:22.98
7. insanebrain 00:24.80
8. Irisa
107
00:25.87
9. mrgmath
25
00:31.96
10. kroller
13
00:32.78
11. CLAVDIVS
68
00:33.84
12. AlexanderIII 00:38.31
13. nosenugget
137
00:40.13
14. gorilla801
1
00:41.75
15. akiazusa 00:43.41
16. sixgs 00:45.26
17. wyq97 00:46.02
18. 신동근
17
00:47.36
19. ambiorix 00:48.86
20. Koakuma
51
00:55.13
This Week
1. Kenolo353
115
00:14.04
2. KarenNotARobot 00:25.32
3. Irisa
107
00:25.87
4. AlexanderIII 00:39.83
5. gorilla801
1
00:41.75
6. CLAVDIVS
68
00:52.90
7. Koakuma
51
00:55.13
8. androcles 00:57.47
9. FunAcroFly
114
02:19.02
10. May John
90
02:57.92
11.--- empty -----:--
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Today
1. Kenolo353
115
00:18.04
2. AlexanderIII 00:50.54
3. gorilla801
1
00:53.84
4. CLAVDIVS
68
00:56.95
5.--- empty -----:--
6.--- empty -----:--
7.--- empty -----:--
8.--- empty -----:--
9.--- empty -----:--
10.--- empty -----:--
11.--- empty -----:--
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20.--- empty -----:--
MO3
1. Douglas Shamlin Jr.
715
00:06.79
2. Daiwie
94
00:10.18
3. numbrr
303
00:10.41
4. sauceguardian
102
00:11.32
5. TashiroMiraki
217
00:11.43
6. vowels
216
00:11.50
7. lmsc5k
65
00:12.39
8. Tunnel Keeper
67
00:13.19
9. jaybrainer
246
00:13.22
10. sfumato
166
00:13.88
AO5
1. Douglas Shamlin Jr.
715
00:07.19
2. Daiwie
94
00:10.62
3. numbrr
303
00:12.12
4. TashiroMiraki
217
00:12.15
5. vowels
216
00:12.18
6. sauceguardian
102
00:12.24
7. lmsc5k
65
00:12.73
8. jaybrainer
246
00:13.55
9. Tunnel Keeper
67
00:13.58
10. qqwref
264
00:14.27
AO12
1. Douglas Shamlin Jr.
715
00:08.09
2. Daiwie
94
00:11.20
3. vowels
216
00:12.94
4. numbrr
303
00:13.28
5. sauceguardian
102
00:13.63
6. TashiroMiraki
217
00:13.69
7. lmsc5k
65
00:14.06
8. qqwref
264
00:15.59
9. Tunnel Keeper
67
00:16.78
10. jaybrainer
246
00:16.91
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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2025-12-24 15:27:22

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