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. EC31
20
00:01.00
2. TashiroMiraki
160
00:01.23
3. boru
86
00:01.71
4. sameo
27
00:02.28
5. Dino Nuggies
20
00:02.51
6. m_and_m_toastie
55
00:03.39
7. bananaman7777777
8
00:03.50
8. Kenolo353
67
00:03.71
9. vivyanowo 00:04.13
10. RCC
22
00:04.47
11. qwertyuiopasdfghjklz...
6
00:04.63
12. DownInOhio
12
00:04.71
13. A weird sloth
12
00:04.79
14. sun10
4
00:04.83
14. rayzhang770 00:04.83
16. wuyukkk 00:04.90
17. home
134
00:05.09
18. Solander
32
00:05.11
18. ErikLink 00:05.11
20. Dorice
177
00:05.22
This Week
1. EC31
20
00:01.56
2. Dino Nuggies
20
00:02.51
3. sameo
27
00:03.09
4. Kenolo353
67
00:03.71
5. DownInOhio
12
00:04.71
6. m_and_m_toastie
55
00:04.78
7. A weird sloth
12
00:04.79
8. sqyoyo 00:07.17
9. AlexanderIII 00:07.86
10. CipherStar
22
00:09.34
11. sronse 00:12.13
12. Eskimosnake
9
00:17.38
13. Sinews
22
00:27.61
14. XiaoXin1113
6
00:35.11
15. RosemaryW 01:15.19
16.--- empty -----:--
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18.--- empty -----:--
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20.--- empty -----:--
Today
1. AlexanderIII 00:07.86
2. sronse 00:12.13
3. Eskimosnake
9
00:17.38
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.
472
00:00.94
2. vowels
189
00:01.45
3. qqwref
249
00:01.75
4. EC31
20
00:01.79
5. Pulsefire
190
00:01.84
5. sfumato
163
00:01.84
7. TashiroMiraki
160
00:02.00
8. jaybrainer
130
00:02.02
9. kyrawr8383
95
00:02.12
10. MEGACHEESE
49
00:02.15
AO5
1. Douglas Shamlin Jr.
472
00:01.04
2. vowels
189
00:01.76
3. qqwref
249
00:01.87
4. sfumato
163
00:02.01
5. EC31
20
00:02.20
6. jaybrainer
130
00:02.22
7. Pulsefire
190
00:02.24
8. MEGACHEESE
49
00:02.25
9. TashiroMiraki
160
00:02.39
10. kyrawr8383
95
00:02.40
AO12
1. Douglas Shamlin Jr.
472
00:01.30
2. vowels
189
00:02.22
3. qqwref
249
00:02.40
4. sfumato
163
00:02.51
5. Pulsefire
190
00:02.65
6. BingBongBob
99
00:02.73
7. jaybrainer
130
00:02.80
8. TashiroMiraki
160
00:03.06
9. EC31
20
00:03.07
9. MEGACHEESE
49
00:03.07
Robots / programmatic solversinfo  
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* 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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2023-06-06 03:51:49

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