Yin-Yang


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Yin-Yang is a logic puzzle with simple rules and challenging solutions.

The rules are simple.Yin-Yang is played on a rectangular grid with no standard size. Some cells start out filled with black or white. The rest of the cells are empty. The goal is to color all cells in such a way that:
1. All black cells should be connected orthogonally in a single group.
2. All white cells should be connected orthogonally in a single group.
3. 2x2 areas of the same color are not allowed.

These 3 simple rules lead to some complex deductions, which are not so obvious. There are 2 important lemmas based on them, without which even the easy Yin-Yang puzzles seem very hard or even impossible to approach. You can learn these lemmas in the video tutorial below.

Video Tutorial
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Yin-Yang


6x6 Easy Yin-Yang | 6x6 Normal Yin-Yang | 6x6 Hard Yin-Yang | 10x10 Easy Yin-Yang | 10x10 Normal Yin-Yang | 10x10 Hard Yin-Yang | 15x15 Easy Yin-Yang | 15x15 Normal Yin-Yang | 15x15 Hard Yin-Yang | 20x20 Easy Yin-Yang | 20x20 Normal Yin-Yang | 20x20 Hard Yin-Yang | 25x25 Easy Yin-Yang | 25x25 Normal Yin-Yang | 25x25 Hard Yin-Yang

This Month
1. Judaske
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2. AGecko
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3. ThePipeline
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4. lizardyi 01:41.55
5. 047619x 01:42.52
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10. qobi
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11. Mitr256
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12. darjien 02:24.77
13. beatrixwashere
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14. zznxxxbl 02:45.45
15. Dorice
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16. Abenson21 03:32.29
17. Zerozeddy1
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04:48.80
18. idonoy
31
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19. CauDravan
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This Week
1. ThePipeline
66
01:33.44
2. 047619x 02:12.55
3. qobi
221
02:14.88
4. Mitr256
131
02:17.96
5. darjien 02:24.77
6. Siloam 02:49.09
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MO3
1. numbrr
289
00:43.43
2. daanbe
213
00:48.20
3. vowels
214
00:52.77
4. Make
268
00:55.30
5. emdaatoh
88
01:03.03
6. haramey
228
01:09.68
7. Ailurus
172
01:12.15
8. ypw19
74
01:12.67
9. PeachClobbers
156
01:14.17
10. Noridice
104
01:14.95
AO5
1. numbrr
289
00:43.43
2. daanbe
213
00:51.10
3. Make
268
00:55.45
4. vowels
214
00:56.03
5. emdaatoh
88
01:06.08
6. haramey
228
01:11.22
7. Ailurus
172
01:13.51
8. Noridice
104
01:14.95
9. Semer
98
01:19.76
10. PeachClobbers
156
01:23.47
AO12
1. numbrr
289
00:55.81
2. daanbe
213
00:56.79
3. vowels
214
01:02.40
4. Make
268
01:07.65
5. emdaatoh
88
01:17.66
6. haramey
228
01:18.08
7. Ailurus
172
01:20.60
8. Noridice
104
01:24.31
9. ypw19
74
01:32.63
10. PeachClobbers
156
01:33.26
Robots / programmatic solversinfo  
1.windex42-robot
1
00:05.399
2.Paul Bismuth
1
00:25.034
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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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2025-05-02 04:43:08

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