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. ThePipeline
85
01:26.69
2. Noridice
113
01:29.05
3. JZE
83
01:35.51
4. lizardyi 01:42.85
5. epinu
89
01:47.73
6. Qian_from_China
127
02:08.87
7. AnonyMinor
52
03:35.15
8. HackMan
108
03:44.90
9. pslc00
31
03:50.70
10. Feanor 04:14.22
11. qobi
227
05:37.52
12. edenasharpie 11:11.09
13. slyguy519
52
25:31.54
14. drbop
42
27:13.01
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This Week
1. Noridice
113
01:29.05
2. Qian_from_China
127
02:08.87
3. pslc00
31
03:50.70
4. HackMan
108
03:53.56
5. slyguy519
52
25:31.54
6. drbop
42
27:13.01
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Today
1. Qian_from_China
127
02:08.87
2. HackMan
108
04:17.56
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4.--- empty -----:--
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MO3
1. Deglis
44
01:25.46
2. numbrr
297
01:26.03
3. Puzzler3
48
01:28.96
4. daanbe
215
01:29.21
5. ThePipeline
85
01:31.96
6. vowels
216
01:32.10
7. Frog The Toast
62
01:36.74
8. Noridice
113
01:36.89
9. JZE
83
01:40.54
10. ypw19
76
01:42.39
AO5
1. Deglis
44
01:28.05
2. daanbe
215
01:29.21
3. ThePipeline
85
01:31.97
4. Puzzler3
48
01:32.57
5. numbrr
297
01:33.06
6. vowels
216
01:34.22
7. Frog The Toast
62
01:37.60
8. Noridice
113
01:40.08
9. JZE
83
01:40.73
10. haramey
230
01:44.65
AO12
1. Deglis
44
01:29.76
2. daanbe
215
01:33.87
3. ThePipeline
85
01:34.35
4. vowels
216
01:36.10
5. Frog The Toast
62
01:41.58
6. JZE
83
01:45.44
7. Noridice
113
01:46.04
8. haramey
230
01:49.80
9. Make
273
01:51.62
10. numbrr
297
01:53.03
Robots / programmatic solversinfo  
1.windex42-robot
1
00:00.988
2.Paul Bismuth
1
00:39.531
3.angelinajeany07:35.279

* 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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2025-07-18 23:36:41

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