PlaySudoku.us
Hard · Puzzle #634
3
5
2
4
6
1
6
2
3
4
1
4
6
7
7
3
6
9
4
5
7
2
9
1
8
4
3
2
"The reading of all good books is like a conversation with the finest minds of past centuries." — René Descartes
"The reading of all good books is like a conversation with the finest minds of past centuries." — René Descartes
Every row, column, and box in a completed Sudoku sums to 45 — the sum of digits 1 through 9. A useful sanity check.
Every row, column, and box in a completed Sudoku sums to 45 — the sum of digits 1 through 9. A useful sanity check.