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
00:26.66
2. Dorice
242
00:50.95
3. afidaleo
132
00:55.25
4. qobi
227
01:04.35
5. Jazka 01:06.71
6. HackMan
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7. acl68
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8. Ermouf
88
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9. lpbxrzpd
26
01:28.61
10. raiRAT
47
01:32.46
11. llmt9
82
03:04.38
12. destruction321
11
03:36.20
13. azarmadr
17
03:48.64
14. beardedfoot
17
05:13.39
15. APUCSX
31
05:56.65
16. shangdou
24
13:53.28
17. drbop
42
1:18:02.74
18. FunAcroFly
76
24d 20:31:23.64
19.--- empty -----:--
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This Week
1. HackMan
107
01:14.58
2. llmt9
82
03:04.38
3. destruction321
11
03:36.20
4. beardedfoot
17
05:13.39
5. FunAcroFly
76
24d 20:31:23.64
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Today
1. HackMan
107
01:27.55
2. FunAcroFly
76
24d 20:31:23.64
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4.--- empty -----:--
5.--- empty -----:--
6.--- empty -----:--
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MO3
1. numbrr
297
00:27.89
2. Deglis
44
00:28.34
3. ThePipeline
85
00:28.47
4. daanbe
215
00:28.97
5. Puzzler3
47
00:29.72
6. vowels
216
00:31.10
7. Make
273
00:31.30
8. haramey
230
00:32.23
9. JZE
83
00:32.45
10.anonymous
89
00:34.37
AO5
1. numbrr
297
00:27.89
2. Deglis
44
00:29.00
3. daanbe
215
00:29.98
4. ThePipeline
85
00:30.19
5. Puzzler3
47
00:30.74
6. vowels
216
00:31.56
7. Make
273
00:32.40
8. haramey
230
00:33.24
9. JZE
83
00:35.13
10.anonymous
89
00:35.93
AO12
1. Deglis
44
00:30.42
2. ThePipeline
85
00:31.05
3. daanbe
215
00:31.50
4. vowels
216
00:33.04
5. numbrr
297
00:34.54
6. haramey
230
00:34.84
7. Make
273
00:35.43
8. JZE
83
00:36.96
9.anonymous
89
00:37.85
10. Ailurus
176
00:38.74
Robots / programmatic solversinfo  
1.windex42-robot
1
00:00.299
2.Paul Bismuth
1
00:10.784
3.occultations
6
00:12.466

* 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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2025-07-14 21:01:22

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