Sudoku #x262

Sudoku game, level: Expert #262. This Sudoku have 20 given numbers (clues)..
Structure: 7 (1 pcs.), 8 (1 pcs.), 9 (1 pcs.), 4 (2 pcs.), 6 (2 pcs.), 5 (3 pcs.), 2 (3 pcs.), 3 (3 pcs.), 1 (4 pcs.), ∑20.


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5
2
1
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9
4
3
1
6
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5
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