PlaySudoku.us
Hard · Puzzle #748
6
1
8
5
2
6
9
8
4
8
5
8
4
6
3
5
3
5
2
1
4
8
9
4
6
3
5
Solving Sudoku exercises the prefrontal cortex — the brain region responsible for planning and decision-making.
Solving Sudoku exercises the prefrontal cortex — the brain region responsible for planning and decision-making.
"Mathematics is not about numbers, equations, or algorithms — it is about understanding." — William Paul Thurston
"Mathematics is not about numbers, equations, or algorithms — it is about understanding." — William Paul Thurston