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
00:08.74
2. JZE
83
00:09.85
3. lizardyi 00:12.74
4. afidaleo
132
00:16.95
5. Rhododendron
132
00:17.04
6. Nieznany 00:18.19
7. kennethaw88
146
00:18.84
8. Solander
60
00:19.83
9. Dorice
242
00:22.18
10. Ermouf
87
00:22.43
11. AnonyMinor
52
00:27.46
12. qobi
227
00:30.11
13. acl68
53
00:36.65
14. crema
168
00:37.30
15. NickB15 00:37.35
16. scheyette
11
00:40.34
17. HackMan
107
00:44.74
18. llmt9
82
01:02.41
19. swimcade
7
01:07.58
20. FunAcroFly
75
01:14.83
This Week
1. JZE
83
00:09.85
2. lizardyi 00:12.74
3. Rhododendron
132
00:17.04
4. Solander
60
00:22.86
5. AnonyMinor
52
00:27.46
6. NickB15 00:37.35
7. swimcade
7
01:07.58
8. FunAcroFly
75
01:14.83
9. samsamelbz
6
15:31.14
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MO3
1. numbrr
297
00:09.03
2. vowels
216
00:09.24
3. jaybrainer
237
00:10.04
4. daanbe
215
00:10.40
5. haramey
230
00:10.57
6. ThePipeline
85
00:11.09
7. Make
273
00:11.57
8. Ailurus
176
00:12.62
9. Deglis
44
00:12.63
10. vx14
148
00:12.65
AO5
1. numbrr
297
00:09.59
1. vowels
216
00:09.59
3. daanbe
215
00:10.43
4. haramey
230
00:10.95
5. ThePipeline
85
00:12.41
6. Make
273
00:13.12
7. jaybrainer
237
00:13.18
8. vx14
148
00:13.23
9. Ailurus
176
00:13.52
10. Deglis
44
00:13.81
AO12
1. vowels
216
00:10.52
2. numbrr
297
00:11.34
3. daanbe
215
00:12.07
4. haramey
230
00:13.20
5. ThePipeline
85
00:13.53
6. Ailurus
176
00:14.63
7. Deglis
44
00:14.66
8. Make
273
00:14.84
9. vx14
148
00:14.96
10. jaybrainer
237
00:15.17
Robots / programmatic solversinfo  
1.windex42-robot
1
00:00.300
2.Paul Bismuth
1
00:07.137
3.Annnnnna_gy
1
12:08.443

* 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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2025-07-12 06:55:16

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