Sudoku #h310

Sudoku game, level: Hard #310. This Sudoku have 23 given numbers (clues)..
Structure: 6 (1 pcs.), 9 (1 pcs.), 8 (2 pcs.), 5 (2 pcs.), 3 (3 pcs.), 1 (3 pcs.), 4 (3 pcs.), 2 (4 pcs.), 7 (4 pcs.), ∑23.


Current Time 0:0
Best Time: -:-
1  
2  
3  
4  
5  
6  
7  
8  
9  
DEL  
1  
2  
3  
4  
5  
6  
7  
8  
9  
DEL  
4
2
4
7
3
5
2
8
1
7
2
8
9
5
3
1
6
2
4
7
3
1
7
Without keyboard:
Check Sudoku rules:
Show/Hide notes:
Highlight:
Restart:
Auto Fill notes:
HINT:
Compare to result:
Show Result: