Sudoku #x461

Sudoku game, level: Expert #461. This Sudoku have 22 given numbers (clues)..
Structure: 3 (0 pcs.), 2 (2 pcs.), 4 (2 pcs.), 6 (2 pcs.), 1 (3 pcs.), 5 (3 pcs.), 8 (3 pcs.), 9 (3 pcs.), 7 (4 pcs.), ∑22.


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6
7
4
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2
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7
9
1
1
9
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5
8
8
9
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