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. Dorice
252
01:44.94
2. NaluXV1 02:06.50
3. acl68
58
02:09.07
4. Elouann9
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02:13.28
5. AnonyMinor
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02:34.78
6. Wuni14 02:51.89
7. FunAcroFly
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03:33.37
8. Durutti
4
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9. thrasymachus
41
04:38.86
10. Samm
16
04:40.92
11. qobi
231
04:46.11
12. daspore 05:05.85
13. 신동근
4
06:23.86
14. tianyifans
19
10:33.01
15. slyguy519
58
11d 17:02:03.05
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This Week
1. acl68
58
02:09.07
2. Durutti
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04:36.58
3. thrasymachus
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04:38.86
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MO3
1. numbrr
301
00:45.31
2. daanbe
216
00:46.03
3. Deglis
58
00:48.82
4. vowels
216
00:50.42
5. ThePipeline
87
01:00.43
6. Make
275
01:01.11
7. haramey
233
01:03.29
8. Noridice
140
01:03.43
9. Ailurus
177
01:04.23
10. vx14
151
01:07.15
AO5
1. daanbe
216
00:46.66
2. numbrr
301
00:47.06
3. Deglis
58
00:52.90
4. vowels
216
00:54.13
5. Make
275
01:01.02
6. ThePipeline
87
01:03.11
7. haramey
233
01:07.40
8. Noridice
140
01:07.45
9. Ailurus
177
01:08.23
10. emdaatoh
92
01:13.90
AO12
1. daanbe
216
00:53.71
2. vowels
216
00:58.55
3. Deglis
58
01:00.74
4. ThePipeline
87
01:05.02
5. Make
275
01:05.36
6. numbrr
301
01:12.50
7. haramey
233
01:14.38
8. Ailurus
177
01:14.57
9. Noridice
140
01:16.86
10. who-are-you
77
01:19.38
Robots / programmatic solversinfo  
1.windex42-robot
1
00:01.915
2.Paul Bismuth
1
00:30.085
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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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2025-10-22 10:46:54

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