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. keehaag
139
00:15.53
2. Nieznany 00:15.91
3. kennethaw88
142
00:16.97
4. Dorice
238
00:18.92
5. 047619x 00:19.63
6. ThePipeline
66
00:19.94
7. beatrixwashere
97
00:20.02
8. lizardyi 00:20.85
9. Judaske
31
00:23.01
10. Siloam 00:23.15
11. homer 00:27.72
12. brewcine
63
00:33.72
13. qobi
221
00:34.45
14. ChiefOsceola 00:34.97
15. zhuxi1104 00:36.47
16. jiugan
62
00:38.15
17. Sawdust99
44
00:49.72
18. snaphiss
78
00:54.73
19. SohamSaha 01:00.78
20. idonoy
31
01:01.64
This Week
1. Nieznany 00:15.91
2. 047619x 00:19.63
3. kennethaw88
142
00:20.62
4. Siloam 00:27.70
5. qobi
221
00:48.52
6. SohamSaha 01:00.78
7. Zerozeddy1
69
01:04.04
8. windex42
33
01:20.87
9. soupie 01:24.80
10. daspore 02:16.68
11. WeiofShen 02:22.00
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MO3
1. numbrr
289
00:08.92
2. vowels
214
00:09.09
3. daanbe
213
00:11.25
4. haramey
228
00:13.57
5. jaybrainer
226
00:13.65
6. Ailurus
172
00:14.44
7. Make
268
00:14.84
8.anonymous
30
00:15.66
9. ypw19
74
00:15.81
10. vx14
134
00:17.44
AO5
1. numbrr
289
00:09.42
2. vowels
214
00:09.60
3. daanbe
213
00:11.79
4. haramey
228
00:14.28
5. jaybrainer
226
00:14.47
6. Ailurus
172
00:15.04
7. Make
268
00:15.13
8. ypw19
74
00:17.05
9. vx14
134
00:17.57
10.anonymous
30
00:17.85
AO12
1. vowels
214
00:11.07
2. numbrr
289
00:11.42
3. daanbe
213
00:12.92
4. haramey
228
00:16.14
5. Make
268
00:16.83
6. jaybrainer
226
00:17.81
7. Ailurus
172
00:17.90
8. Noridice
104
00:21.18
9. vx14
134
00:21.53
10. SilverHawk
205
00:22.21
Robots / programmatic solversinfo  
1.windex42-robot
1
00:00.755
2.Paul Bismuth
1
00:06.956
3.EvaKic24122402:11.897

* 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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2025-05-02 05:18:14

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