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. Dorice
251
01:21.33
2. RaiAT
66
01:44.67
3. NaluXV1 01:56.03
4. AnonyMinor
60
02:01.70
5. HackMan
115
02:12.91
6. Wuni14 02:16.87
7. qobi
231
02:22.33
8. gabobr
43
02:38.14
9. FunAcroFly
100
02:59.52
10. Educated-cat
28
03:00.13
11. acl68
57
03:00.85
12. S Otenkiya
55
03:07.49
13. spana 03:30.07
14. Wedinus 06:15.28
15. CroMa
69
06:44.45
16. daspore 18:07.75
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This Week
1. Dorice
251
01:21.37
2. RaiAT
66
01:44.67
3. AnonyMinor
60
02:01.70
4. CroMa
69
06:44.45
5. daspore 18:07.75
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7.--- empty -----:--
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Today
1. daspore 18:07.75
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3.--- empty -----:--
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5.--- empty -----:--
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MO3
1. numbrr
301
00:49.66
2. Deglis
57
00:50.63
3. ThePipeline
87
00:55.51
4. daanbe
216
00:56.98
5. vowels
216
00:57.52
6. Make
274
00:59.01
7. Noridice
137
00:59.06
8. JZE
87
01:03.13
9. Puzzler3
51
01:03.85
10. haramey
233
01:05.47
AO5
1. numbrr
301
00:51.35
2. Deglis
57
00:53.27
3. ThePipeline
87
00:56.16
4. daanbe
216
00:56.27
5. Noridice
137
00:59.32
6. vowels
216
00:59.39
7. Make
274
01:01.15
8. Puzzler3
51
01:03.33
9. haramey
233
01:05.16
10. JZE
87
01:08.28
AO12
1. Deglis
57
00:55.75
2. ThePipeline
87
00:59.34
3. daanbe
216
00:59.96
4. vowels
216
01:02.10
5. Noridice
137
01:02.40
6. Make
274
01:03.21
7. numbrr
301
01:04.50
8. haramey
233
01:08.62
9. Ailurus
177
01:11.84
10. SilverHawk
212
01:13.41
Robots / programmatic solversinfo  
1.windex42-robot
1
00:00.320
2.occultations
6
00:10.466
3.Paul Bismuth
1
00:22.880

* 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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2025-10-14 20:31:55

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