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. Frog The Toast
54
01:46.49
2. Noridice
104
01:49.06
3. miaoush
112
01:57.95
4. vilodi
77
02:11.67
5. lizardyi 02:35.28
6. MrToast 02:44.29
7. stoopid 02:58.45
8. escrellin
31
02:58.82
9. Awesome Audrey
57
03:02.42
10. Judaske
31
03:06.10
11. OtherBill 03:11.27
12. kennethaw88
142
03:19.87
13. KetchaP 03:20.12
14. Quadratic289
61
03:26.01
15. JZHyyds
29
03:31.02
16. punk
101
03:41.39
17. darjien 03:43.98
18. Leonid Zarubin
57
03:46.39
19. drallyowl2
71
03:50.75
20. AGecko
72
03:50.83
This Week
1. vilodi
77
02:11.67
2. stoopid 02:58.45
3. Awesome Audrey
57
03:02.42
4. OtherBill 03:21.82
5. kennethaw88
142
03:48.95
6. darjien 03:49.18
7. plosion
51
05:57.22
8. Finger Shi
31
07:32.57
9. bilsef
16
08:54.63
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Today
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MO3
1. daanbe
213
01:42.73
2. Frog The Toast
54
01:46.22
3. numbrr
289
01:55.09
4. Puzzler3
41
02:00.69
5. haramey
228
02:04.80
6. Noridice
104
02:06.47
7. Make
268
02:06.93
8. vowels
214
02:07.31
9. miaoush
112
02:08.17
10. emdaatoh
88
02:17.78
AO5
1. daanbe
213
01:45.09
2. Frog The Toast
54
01:46.83
3. haramey
228
02:07.89
4. vowels
214
02:08.22
5. Noridice
104
02:09.69
6. Make
268
02:10.39
7. miaoush
112
02:16.00
8. emdaatoh
88
02:26.92
9. Ailurus
172
02:28.11
10.anonymous
87
02:30.44
AO12
1. daanbe
213
01:55.62
2. Frog The Toast
54
02:05.64
3. Make
268
02:17.04
4. Noridice
104
02:19.45
5. vowels
214
02:19.71
6. haramey
228
02:25.55
7. miaoush
112
02:30.10
8. Ailurus
172
02:40.63
9. who-are-you
35
02:45.66
10. emdaatoh
88
02:48.77
Robots / programmatic solversinfo  
1.Paul Bismuth
1
00:48.487
2.windex42-robot
1
01:26.716
3.angelinajeany08:46.520

* 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 04:39:20

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