PlaySudoku.us
Expert · Puzzle #54
6
2
4
7
2
8
1
4
9
5
3
7
8
1
1
7
4
1
9
3
4
8
6
2
9
Despite its Japanese name, Sudoku was invented by an American and popularized in Japan before going global.
Despite its Japanese name, Sudoku was invented by an American and popularized in Japan before going global.
"Play the opening like a book, the middlegame like a magician, and the endgame like a machine." — Rudolf Spielmann
"Play the opening like a book, the middlegame like a magician, and the endgame like a machine." — Rudolf Spielmann