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. boru
97
00:03.17
2. jaybrainer
195
00:03.35
3. numbrr
250
00:03.48
4. Make
242
00:03.78
5. daanbe
182
00:04.28
6. GoldChoco36
110
00:04.46
7. Ailurus
142
00:04.69
8. Arok
99
00:04.78
9. hkjsf
112
00:04.87
10. FAlin
167
00:04.91
11. vowels
207
00:04.99
12. SilverHawk
180
00:05.01
13. Scepthan
60
00:05.02
14. haramey
194
00:05.15
15. beatrixwashere
47
00:05.49
16. kennethaw88
129
00:05.54
17. Truth-or-Peace
103
00:05.64
18. Icay
174
00:06.03
19. AGecko
52
00:06.32
20. Dorice
215
00:06.46
This Week
1. Make
242
00:03.78
2. Ailurus
142
00:04.69
3. hkjsf
112
00:04.87
4. kennethaw88
129
00:05.54
5. Nieznany 00:07.98
6. mim-1
9
00:08.40
7. afidaleo
103
00:08.54
8. Dennis Meinen
72
00:08.77
9. sutchinger
78
00:09.15
10. the_Zinger
53
00:09.25
11. AlistairMacAllister
50
00:10.04
12. Solander
46
00:10.22
13. cknori95
56
00:10.83
14. daanbe
182
00:10.85
15. MissMarie0722
67
00:10.86
16. buckledmole
50
00:10.90
17. MishaVargas
1
00:11.03
18. Zzx06 00:11.27
19. qobi
197
00:11.55
20. ChiefOsceola 00:11.73
Today
1. MissMarie0722
67
00:14.53
2. Axin0627 00:16.43
3. nosleeplong
120
00:24.12
4. ambiorix 00:38.85
5. SimbaFV
8
00:45.56
6. pokosuk
24
00:46.46
7.--- empty -----:--
8.--- empty -----:--
9.--- empty -----:--
10.--- empty -----:--
11.--- empty -----:--
12.--- empty -----:--
13.--- empty -----:--
14.--- empty -----:--
15.--- empty -----:--
16.--- empty -----:--
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
MO3
1. vowels
207
00:03.56
2. numbrr
250
00:03.63
3. jaybrainer
195
00:03.66
4. boru
97
00:04.13
5. daanbe
182
00:04.60
6. haramey
194
00:04.80
7. Make
242
00:05.13
8. FAlin
167
00:05.49
9. hkjsf
112
00:05.59
10. soy
125
00:05.74
AO5
1. vowels
207
00:03.56
2. numbrr
250
00:03.78
3. jaybrainer
195
00:04.03
4. boru
97
00:04.52
5. daanbe
182
00:04.59
6. haramey
194
00:05.05
7. Make
242
00:05.33
8. hkjsf
112
00:05.78
8. Ailurus
142
00:05.78
10. GoldChoco36
110
00:06.06
AO12
1. vowels
207
00:03.99
2. numbrr
250
00:04.06
3. jaybrainer
195
00:04.36
4. daanbe
182
00:05.49
5. haramey
194
00:05.58
6. boru
97
00:05.81
7. Make
242
00:06.20
8. Ailurus
142
00:06.34
9. hkjsf
112
00:06.41
10. SilverHawk
180
00:06.44
Robots / programmatic solversinfo  
1.beatrixwashere
47
00:00.259
2.--- empty -----:--
3.--- empty -----:--

* 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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2024-07-18 05:07:41

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