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2026-07-20 Problems

Beginner
4
2
7
2
5
3
8
1
1
8
7
2
6
3
9
8
5
3
1
9
7
8
4
6
1
9
5
7
5
2
6
9
7
8
4
8
5
6
1
7
3
Intermediate
4
1
9
3
7
2
9
5
1
3
2
3
5
6
7
4
1
8
9
5
3
6
3
5
1
9
3
1
8
5
4
Advanced
3
9
4
9
8
1
2
4
5
6
8
2
7
1
4
8
6
4
5
7
8
1
1
5
3