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
66
00:05.41
2. kennethaw88
142
00:05.51
3. Frog The Toast
54
00:05.68
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139
00:05.73
5. Quadratic289
61
00:06.03
6. Dorice
238
00:06.50
7. lizardyi 00:06.61
8. lpbxrzpd
23
00:07.31
9. lauraterry1 00:07.41
10. qobi
221
00:07.44
10. Judaske
31
00:07.44
12. zooandroo
90
00:07.87
13. KlunkyDoo 00:08.28
14. batputz5 00:08.51
15. hammerhead20 00:08.55
15. oshi
26
00:08.55
17. ScorpionMax 00:08.68
18. josh hough
8
00:08.80
19. SlugBugBlue 00:09.07
20. ChiefOsceola 00:09.13
This Week
1. Quadratic289
61
00:06.03
2. kennethaw88
142
00:06.54
3. qobi
221
00:07.44
4. Dorice
238
00:07.90
5. KlunkyDoo 00:08.28
6. hammerhead20 00:09.03
7. SlugBugBlue 00:09.07
8. batputz5 00:09.24
9. Ontwikseltsaar
66
00:09.45
10. Maelwys 00:10.08
11. ChiefOsceola 00:10.92
12. daspore 00:11.57
13. wyq97 00:13.29
14. JustGeee 00:14.07
15. snaphiss
78
00:15.90
16. HackMan
98
00:17.18
17. yulin aka sabrina
24
00:17.30
18. soupie 00:19.50
19. rescuepanther 00:22.46
20. WeiofShen 00:22.47
Today
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MO3
1. jaybrainer
226
00:02.52
2. numbrr
289
00:03.15
3.anonymous
30
00:03.17
4. vowels
214
00:03.56
5. haramey
228
00:03.78
6. Ailurus
172
00:04.06
7. daanbe
213
00:04.07
8. boru
102
00:04.13
9. Frog The Toast
54
00:04.23
10. Make
268
00:04.30
AO5
1. jaybrainer
226
00:02.71
2. numbrr
289
00:03.55
3. vowels
214
00:03.56
4.anonymous
30
00:03.70
5. daanbe
213
00:03.96
6. haramey
228
00:04.26
7. Ailurus
172
00:04.47
8. boru
102
00:04.52
9. Frog The Toast
54
00:04.57
9. Make
268
00:04.57
AO12
1. jaybrainer
226
00:03.41
2. numbrr
289
00:03.84
3. vowels
214
00:03.99
4.anonymous
30
00:04.20
5. daanbe
213
00:04.32
6. haramey
228
00:04.67
7. Ailurus
172
00:04.88
8. Make
268
00:05.00
9. Frog The Toast
54
00:05.24
10. boru
102
00:05.81
Robots / programmatic solversinfo  
1.beatrixwashere
97
00:00.259
2.windex42-robot
1
00:00.304
3.occultations
6
00:00.643

* 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 04:33:19

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