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. Noridice
131
00:10.80
2. Nieznany 00:17.40
3. lizardyi 00:18.59
4. Oryn
155
00:18.94
5. NaluXV1 00:23.43
6. homer 00:23.79
7. Dorice
247
00:23.85
8. CaptainBen 00:26.55
9. gabobr
42
00:27.65
10. KillerBee
132
00:28.23
11. qobi
230
00:33.72
12. RomanQrr 00:34.54
13. Hugo Andersson
53
00:38.88
14. sillyleather 00:44.00
15. FunAcroFly
94
00:47.16
16. Ariadna
26
00:49.74
17. Siloam 00:54.93
18. Sawdust99
46
01:02.10
19. Dj20200307
50
01:07.42
20. cl0vis0423 01:07.98
This Week
1. Nieznany 00:19.15
2. NaluXV1 00:28.34
3. CaptainBen 00:30.07
4. RomanQrr 00:34.54
5. gabobr
42
00:37.70
6. sillyleather 00:44.00
7. Dorice
247
00:58.14
8. FunAcroFly
94
01:03.48
9. cl0vis0423 01:07.98
10. Sawdust99
46
03:28.19
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Today
1. RomanQrr 00:35.02
2. Sawdust99
46
03:28.19
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MO3
1. numbrr
300
00:08.92
2. vowels
216
00:09.09
3. daanbe
216
00:11.25
4. ThePipeline
86
00:12.21
5. Noridice
131
00:12.98
6. Deglis
53
00:13.43
7. haramey
231
00:13.57
8. jaybrainer
240
00:13.65
9. Ailurus
177
00:14.44
10. Make
274
00:14.84
AO5
1. numbrr
300
00:09.42
2. vowels
216
00:09.60
3. daanbe
216
00:11.79
4. ThePipeline
86
00:13.17
5. Noridice
131
00:13.69
6. Deglis
53
00:13.71
7. haramey
231
00:14.28
8. jaybrainer
240
00:14.47
9. vx14
148
00:14.66
10. Ailurus
177
00:15.04
AO12
1. vowels
216
00:11.07
2. numbrr
300
00:11.42
3. daanbe
216
00:12.92
4. ThePipeline
86
00:14.31
5. Deglis
53
00:14.69
6. Noridice
131
00:15.46
7. haramey
231
00:16.14
8. Make
274
00:16.83
9. vx14
148
00:17.05
10. jaybrainer
240
00:17.81
Robots / programmatic solversinfo  
1.windex42-robot
1
00:00.755
2.Paul Bismuth
1
00:06.956
3.king8001
1
00:59.437

* 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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2025-09-18 04:15:49

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