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. Oryn
152
00:05.76
2. FangTianyi 00:07.59
3. Dorice
246
00:07.87
4. gabobr
42
00:09.08
5. Hybrid
159
00:09.13
6. Solander
61
00:10.20
7. fishysua
145
00:11.16
8. SakyhyKaren 00:11.53
9. AnonyMinor
56
00:11.71
10. FunAcroFly
87
00:13.48
11. xiaopaLLL
6
00:20.56
12. Drongo
12
00:21.72
13. Rocketdog
25
00:21.77
14. CaptainBen 00:22.65
15. slyguy519
54
00:22.98
16. Maelwys 00:23.49
17. numeral
23
00:24.30
18. Thomannie 00:26.07
19. canglang
5
00:28.09
20. qobi
230
00:30.72
This Week
1. gabobr
42
00:10.77
2. SakyhyKaren 00:11.53
3. slyguy519
54
00:22.98
4. Thomannie 00:26.07
5. Dorice
246
00:32.68
6. NarcolepticBear
18
00:42.95
7. cc
4
00:57.40
8. Uthor 1d 23:32:20.92
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Today
1. Uthor 1d 23:32:20.92
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MO3
1. numbrr
300
00:03.51
2. vowels
216
00:03.71
3. AnzaJoinDiscord
240
00:04.03
4. daanbe
216
00:04.22
5. JZE
85
00:04.67
6. haramey
231
00:04.73
7. Ailurus
176
00:05.16
8. SilverHawk
209
00:05.25
9. soy
149
00:05.26
10. Noridice
128
00:05.38
AO5
1. numbrr
300
00:03.95
2. vowels
216
00:04.04
3. AnzaJoinDiscord
240
00:04.37
4. daanbe
216
00:04.41
5. haramey
231
00:05.14
6. Noridice
128
00:05.59
7. JZE
85
00:05.61
8. Ailurus
176
00:05.63
9. SilverHawk
209
00:05.84
10. ThePipeline
86
00:05.87
AO12
1. numbrr
300
00:04.46
2. vowels
216
00:04.58
3. daanbe
216
00:04.80
4. AnzaJoinDiscord
240
00:05.26
5. haramey
231
00:05.96
6. ThePipeline
86
00:06.28
7. Noridice
128
00:06.33
8. Ailurus
176
00:06.56
9. Deglis
51
00:06.60
10. SilverHawk
209
00:06.84
Robots / programmatic solversinfo  
1.windex42-robot
1
00:00.298
2.Paul Bismuth
1
00:02.687
3.StayGold00:26.775

* 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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2025-08-30 15:49:33

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