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

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This Week
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14. Uthor 24d 20:31:23.64
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Today
1. Sunny6D 00:02.93
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MO3
1. Douglas Shamlin Jr.
720
00:00.90
2. vowels
216
00:01.07
3. jaybrainer
266
00:01.16
4. lmsc5k
67
00:01.46
5. sauceguardian
106
00:01.54
6. numbrr
321
00:01.60
7. SunOceanBeach
260
00:01.73
8. qqwref
266
00:01.75
9. EC31
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00:01.79
10. sfumato
168
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AO5
1. Douglas Shamlin Jr.
720
00:00.96
2. jaybrainer
266
00:01.37
3. vowels
216
00:01.44
4. lmsc5k
67
00:01.56
5. numbrr
321
00:01.73
6. sauceguardian
106
00:01.82
7. qqwref
266
00:01.87
8. SunOceanBeach
260
00:01.90
9. Daiwie
102
00:01.97
10. sfumato
168
00:02.01
AO12
1. Douglas Shamlin Jr.
720
00:01.18
2. vowels
216
00:01.81
3. jaybrainer
266
00:01.89
4. lmsc5k
67
00:01.92
5. numbrr
321
00:02.16
6. sauceguardian
106
00:02.20
7. SunOceanBeach
260
00:02.31
8. qqwref
266
00:02.40
9. Daiwie
102
00:02.49
10. sfumato
168
00:02.51
Robots / programmatic solversinfo  
1.Paul Bismuth
1
00:02.066
2.kanaderu
1
00:03.677
3.3333700:07.503

* 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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