PlaySudoku.us
Hard · Puzzle #323
4
5
7
7
8
6
2
3
7
1
8
3
1
6
4
4
8
2
6
1
5
9
4
2
7
7
3
"Problems worthy of attack prove their worth by fighting back." — Piet Hein
"Problems worthy of attack prove their worth by fighting back." — Piet Hein
Solve an Expert puzzle in under 15 minutes. Study one new advanced technique before you begin.
Solve an Expert puzzle in under 15 minutes. Study one new advanced technique before you begin.