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. sauceguardian
99
00:10.29
2. lmsc5k
63
00:10.89
3. Kenolo353
109
00:12.70
4. KarenNotARobot 00:18.92
5. randomflyintaco
118
00:19.17
6. Dorice
246
00:20.60
7. insanebrain 00:25.65
8. AnonyMinor
57
00:28.65
9. AlexanderIII 00:33.79
10. nickyeatman 00:38.10
11. gorilla801 00:41.82
12. ambiorix 00:46.22
13. Demeris 00:46.68
14. Heqnry 00:49.82
15. Nmiss 00:50.17
16. CLAVDIVS
61
00:50.33
17. sixgs 00:57.59
18. drbop
45
01:01.22
19. Tartempion 01:13.99
20. Rocketdog
25
01:14.49
This Week
1. sauceguardian
99
00:10.29
2. lmsc5k
63
00:10.89
3. Kenolo353
109
00:12.70
4. KarenNotARobot 00:20.85
5. randomflyintaco
118
00:21.58
6. insanebrain 00:27.22
7. AlexanderIII 00:36.56
8. Demeris 00:46.68
9. ambiorix 00:48.77
10. gorilla801 00:55.54
11. sixgs 00:57.59
12. CLAVDIVS
61
00:58.40
13. Rocketdog
25
01:14.49
14. Suball
20
01:28.85
15. RosemaryW 02:26.14
16.--- empty -----:--
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
Today
1. Kenolo353
109
00:17.07
2. randomflyintaco
118
00:28.76
3. AlexanderIII 00:36.56
4. ambiorix 00:48.77
5. gorilla801 00:55.54
6. Suball
20
01:44.76
7. RosemaryW 02:27.82
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.
706
00:06.79
2. Daiwie
89
00:10.18
3. numbrr
300
00:10.41
4. sauceguardian
99
00:11.32
5. TashiroMiraki
216
00:11.43
6. vowels
216
00:11.50
7. lmsc5k
63
00:12.39
8. Tunnel Keeper
64
00:13.19
9. AnzaJoinDiscord
240
00:13.22
10. sfumato
166
00:13.88
AO5
1. Douglas Shamlin Jr.
706
00:07.19
2. Daiwie
89
00:10.62
3. numbrr
300
00:12.12
4. TashiroMiraki
216
00:12.15
5. vowels
216
00:12.18
6. sauceguardian
99
00:12.24
7. lmsc5k
63
00:12.73
8. AnzaJoinDiscord
240
00:13.55
9. Tunnel Keeper
64
00:13.58
10. qqwref
260
00:14.27
AO12
1. Douglas Shamlin Jr.
706
00:08.09
2. Daiwie
89
00:11.20
3. vowels
216
00:12.94
4. numbrr
300
00:13.28
5. sauceguardian
99
00:13.63
6. TashiroMiraki
216
00:13.69
7. lmsc5k
63
00:14.06
8. qqwref
260
00:15.59
9. Tunnel Keeper
64
00:16.78
10. AnzaJoinDiscord
240
00:16.91
Robots / programmatic solversinfo  
1.hsjbh
1
01:26.414
2.Chen Enxiu
1
02:28.288
3.sysd
1
03:16.357

* 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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2025-09-05 22:45:01

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