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
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01:26.69
2. epinu
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01:47.73
3. JZE
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4. brewcine
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7. Maelwys 03:07.84
8. qobi
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9. riderdecade
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10. AnonyMinor
51
03:35.15
11. HackMan
107
03:44.90
12. acl68
53
04:37.79
13. Wuni14 04:45.30
14. APUCSX
30
07:44.79
15. edenasharpie 11:11.09
16. weiziyue0000 17:59.90
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This Week
1. epinu
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2. AnonyMinor
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3. HackMan
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MO3
1. Deglis
43
01:25.46
2. numbrr
297
01:26.03
3. Puzzler3
46
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
59
01:36.74
8. ypw19
76
01:42.39
9. haramey
230
01:42.96
10. Ailurus
176
01:46.78
AO5
1. Deglis
43
01:28.05
2. daanbe
215
01:29.21
3. ThePipeline
85
01:31.97
4. Puzzler3
46
01:32.57
5. numbrr
297
01:33.06
6. vowels
216
01:34.22
7. Frog The Toast
59
01:37.60
8. haramey
230
01:44.65
9. ypw19
76
01:45.64
10. Make
272
01:47.28
AO12
1. Deglis
43
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
59
01:41.58
6. haramey
230
01:49.80
7. Make
272
01:51.62
8. numbrr
297
01:53.03
9. Noridice
111
01:53.06
10. Ailurus
176
01:53.85
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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2025-07-07 01:04:41

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