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
103
01:49.06
3. miaoush
112
01:55.30
4. lizardyi 02:35.28
5. MrToast 02:44.29
6. OtherBill 02:56.96
7. escrellin
30
02:58.82
8. Judaske
29
03:06.10
9. NeroHYU
108
03:11.49
10. stoopid 03:19.13
11. kennethaw88
142
03:19.87
12. KetchaP 03:20.12
13. Quadratic289
60
03:26.01
14. JZHyyds
29
03:31.02
15. punk
101
03:41.39
16. darjien 03:43.98
17. CyberNinja39 03:46.12
18. Leonid Zarubin
56
03:46.39
19. drallyowl2
71
03:50.75
20. AGecko
71
03:50.83
This Week
1. MrToast 02:44.29
2. lizardyi 02:58.49
3. OtherBill 03:18.31
4. KetchaP 03:20.12
5. JZHyyds
29
03:31.02
6. stoopid 03:33.34
7. darjien 03:49.18
8. cwhwillie
96
06:34.31
9. Bluegill16384
193
07:31.14
10. Finger Shi
31
07:32.57
11. qobi
221
07:38.89
12. oflggqwe 07:43.14
13. DanTavvy
43
19:54:28.57
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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
39
02:00.69
5. haramey
228
02:04.80
6. Noridice
103
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
103
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
103
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. emdaatoh
88
02:48.77
10. PeachClobbers
156
02:55.41
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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2025-04-27 02:44:48

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