3 9 6 8 4

8 2 7 5
4 7 6 2 9 4 3
1 2 4 8 3 9 2 1
7 9 9
5 7 7 6
9 8 1 1 8
6 3 4 7 5 8 1 5
1 4 6 3 2 7
#92753 Difficulty: hardest #194735 Difficulty: harder

3 7 3 4
7 8 4 6 2 5 7 1
9 5 4 6
5 3 6 4 7 2
2 1 4 9 3
4 6 1 5
2 4 2
1 5 9 8
9 4 1 3 8 5 4 1
#229007 Difficulty: hard #202856 Difficulty: moderate
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2 3 4 7
4 5 6 8
5 2 2 9
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8 5 4 2 5 6
3 7 8 2 4 9
2 4 6 3 5
7 3 9 3 2
5 3 8 1 5 7 1 6
8 2 4 3 1 5
#177058 Difficulty: moderate #139497 Difficulty: harder
 9 1 9 2
3 5 6
2 3 5 4 4 1
8 6 8
1 4 5 3
3 4 7 2 6 9 5 7 4
9 6 4 3 7 7 3
9 8 7 4 5
5 2 1 9 2 3
#50109 Difficulty: hardest #173075 Difficulty: hardest

8 7 4 5 7
7 8 6 6 8 3
9 4 3 5 2
3 5 6
7 1 8 4 1 9 8
2 7 7 3 2 6 1
4 1 3 4
5 2 8 7
6 5 9 9 7 1 2
#192944 Difficulty: hardest #162420 Difficulty: hard
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2 7 5 7 3
2 8
5 1 6 3 2 9
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8 3 4 1
4 5 7 8
7 9 8 2 4 6 5 1 3
6 2
1 7 9 8 7 3 5
2 6 3 4 9 2 4
#161721 Difficulty: moderate #218814 Difficulty: moderate
 5 2 9 7 2
8 3 4 3
9 7 5 6 8
8 9 6 3 5 1 9
4 8 7 2 6 1
3 1 8 7
4 6 2 1 5 1 8 3
9 5 4 5 7 1 9
7 2 6
#121910 Difficulty: moderate #153017 Difficulty: hard

2 3 5 6 4 3 1 9
4 1 2 7 2
8 2 5
9 8 1 7 5
7 6 3 2 5 8
7 5 4
5 3 9 8 3 1
3 4 8 9 4
6 2 1 8 6
#93426 Difficulty: moderate #3006 Difficulty: harder
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4 2 3 1 3 7
4 9 9 7
5 2 4 1 6
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9 6 7 8 9 8 5
3 1 6 8 2 6
3 9 8 1
1 6 3 1 6 4
7 8 7 5
5 6 3 4 5
#21030 Difficulty: hard #2022 Difficulty: hardest
 7 4 2 4
8 9 5 4 8 1 9
5 3
7 3 1 4 6 5 2
5 9 6 9 7
3 9 6
2 9 2 7
6 1 3 7 4 1
4 6 5 9 7 4 8 6
#189772 Difficulty: harder #51863 Difficulty: hardest

7 9 9 6
2 8 1 3
1 6 9 2
6 5 8
5 3 5 8 7 4
9 7 4 1 2 1 6
2 1 6 7 3
4 7 9 1 5 2 9
8 9 3 3
#86800 Difficulty: moderate #180064 Difficulty: moderate
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4 5 8 9
2 3
7 4 3 1 5 4 5 7
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9 7 4 1
1 7 9 2 3 5 7 9 4
5 4 8
2 6 4 2 1 3
1 6 8 4 2
4 3 9 9 3 5
#69669 Difficulty: harder #48222 Difficulty: moderate