PlaySudoku.us
Hard · Puzzle #694
7
9
2
4
3
7
5
4
3
2
1
1
5
7
4
9
2
4
3
8
7
9
7
3
9
6
5
Practice solving puzzles at a difficulty level where you succeed 90% of the time. That's the zone of maximum skill growth.
Practice solving puzzles at a difficulty level where you succeed 90% of the time. That's the zone of maximum skill growth.
"I don't believe in psychology. I believe in good moves." — Bobby Fischer
"I don't believe in psychology. I believe in good moves." — Bobby Fischer