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Easy
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Hard
Diabolical
Leaderboard
Achievements
My Account
Hardpuzzles
(321592 puzzles)
6
1
1
7
8
2
5
9
9
3
6
4
9
6
6
5
8
3
1
5
4
6
2
7
4
9
2
Difficulty rating: 4.3
Rating: 4.3
9
7
4
3
3
1
7
5
9
2
3
1
6
9
5
3
2
4
3
9
7
3
1
4
5
6
7
Difficulty rating: 3.4
Rating: 3.4
1
3
8
3
6
8
9
1
4
7
3
4
9
2
7
1
6
7
9
7
6
5
2
4
9
8
5
Difficulty rating: 3.2
Rating: 3.2
4
6
1
9
2
8
4
8
4
7
5
8
7
5
2
4
9
1
7
8
6
5
9
1
9
2
7
4
7
5
9
Difficulty rating: 3.2
Rating: 3.2
9
6
4
7
8
3
1
6
7
2
3
4
1
2
9
6
7
8
2
4
6
1
2
3
8
6
Difficulty rating: 2.8
Rating: 2.8
1
6
7
9
3
6
9
5
4
8
8
6
6
3
5
9
2
4
6
3
9
1
7
6
2
4
3
Difficulty rating: 4.2
Rating: 4.2
3
2
7
5
1
8
2
9
8
8
2
9
1
6
3
3
1
4
7
6
8
2
5
2
7
3
7
3
Difficulty rating: 4.0
Rating: 4.0
3
8
1
6
2
4
6
9
5
7
4
8
9
1
6
5
2
8
7
4
3
1
7
6
Difficulty rating: 4.5
Rating: 4.5
8
4
1
6
6
5
2
9
6
9
1
8
6
8
7
2
9
4
4
6
8
7
4
3
4
1
5
7
Difficulty rating: 4.5
Rating: 4.5
6
2
1
9
9
6
4
3
1
8
8
3
5
9
9
2
4
3
3
2
9
8
1
3
6
1
2
3
5
3
8
2
Difficulty rating: 4.0
Rating: 4.0
7
5
3
1
2
1
7
4
9
3
1
1
9
6
5
6
4
4
3
5
9
1
3
8
2
5
1
8
4
1
3
7
Difficulty rating: 2.8
Rating: 2.8
8
4
6
9
2
8
4
5
9
1
2
6
3
1
8
6
7
3
9
5
3
5
8
6
4
2
4
5
3
8
Difficulty rating: 4.4
Rating: 4.4
3
5
2
1
6
2
5
7
4
1
9
7
5
2
4
1
9
8
7
1
1
8
7
4
3
9
Difficulty rating: 4.2
Rating: 4.2
4
6
3
5
3
6
7
2
5
7
3
6
2
7
6
9
1
2
7
9
5
7
2
4
8
5
2
6
1
Difficulty rating: 2.6
Rating: 2.6
7
5
9
7
5
6
5
6
3
9
8
2
1
6
2
9
3
5
7
4
1
5
9
6
9
8
1
3
8
Difficulty rating: 4.2
Rating: 4.2
3
5
4
7
8
5
2
5
9
3
4
5
1
2
7
7
1
6
6
7
3
9
6
1
9
4
Difficulty rating: 3.4
Rating: 3.4
4
3
2
7
2
4
1
4
2
3
5
5
8
9
6
8
4
2
3
6
9
9
6
2
1
5
Difficulty rating: 4.5
Rating: 4.5
7
6
8
9
2
7
1
2
7
3
1
4
9
1
8
8
4
5
1
1
6
3
1
4
2
6
2
5
Difficulty rating: 4.4
Rating: 4.4
4
9
2
8
9
1
7
3
8
7
4
1
6
1
3
4
9
2
8
5
6
7
4
2
1
6
4
5
Difficulty rating: 3.2
Rating: 3.2
3
8
4
7
6
9
1
1
9
7
6
3
4
2
8
1
9
6
4
3
5
7
6
7
4
1
2
6
Difficulty rating: 4.1
Rating: 4.1
1
6
3
2
6
1
7
8
2
5
5
8
1
4
9
5
8
3
8
9
9
7
1
7
4
6
9
5
8
Difficulty rating: 4.2
Rating: 4.2
7
8
6
6
7
2
9
6
4
3
1
5
4
3
4
8
5
7
5
7
8
2
6
5
2
3
5
8
9
3
7
6
Difficulty rating: 3.2
Rating: 3.2
6
8
9
5
2
8
1
9
4
5
4
6
7
1
2
4
1
9
7
1
4
9
5
6
7
4
6
Difficulty rating: 3.0
Rating: 3.0
1
5
9
7
3
1
3
7
1
5
2
6
1
6
3
8
9
8
2
8
7
6
9
3
4
2
3
5
4
Difficulty rating: 2.8
Rating: 2.8
6
3
8
4
5
1
9
4
6
9
9
3
7
2
8
5
8
2
9
7
8
2
7
9
3
6
1
8
Difficulty rating: 3.2
Rating: 3.2
8
5
3
3
5
2
9
8
7
2
4
1
3
7
1
4
2
4
1
8
7
2
5
8
6
3
Difficulty rating: 2.5
Rating: 2.5
1
5
9
7
7
9
4
1
8
1
6
7
5
2
2
1
4
4
5
7
2
8
6
9
2
8
3
Difficulty rating: 4.5
Rating: 4.5
7
2
8
3
9
6
1
5
3
7
8
1
2
8
3
4
4
5
3
9
4
1
1
8
7
6
Difficulty rating: 3.2
Rating: 3.2
3
7
6
8
2
1
8
5
3
1
5
8
4
7
3
2
8
9
7
5
3
4
7
1
2
9
1
8
3
6
Difficulty rating: 3.0
Rating: 3.0
9
4
1
4
5
3
2
2
6
7
8
5
1
3
2
9
2
3
6
5
8
8
1
7
5
Difficulty rating: 4.1
Rating: 4.1
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