PlaySudoku.us
Hard · Puzzle #147
3
9
1
6
7
2
4
8
3
7
6
4
2
8
3
7
9
2
7
1
5
6
3
7
1
2
9
2
Retired architect Howard Garns, who invented the modern Sudoku, never knew it became a global phenomenon — he died in 1989.
Retired architect Howard Garns, who invented the modern Sudoku, never knew it became a global phenomenon — he died in 1989.
"Chess is the art of analysis." — Mikhail Botvinnik
"Chess is the art of analysis." — Mikhail Botvinnik