PlaySudoku.us
Expert · Puzzle #49
6
1
9
7
2
4
2
1
6
3
9
2
4
1
5
8
1
3
4
8
9
4
6
1
"The measure of intelligence is the ability to change." — Albert Einstein
"The measure of intelligence is the ability to change." — Albert Einstein
In Japan, Sudoku is most popular among office workers and is often solved during commutes on trains.
In Japan, Sudoku is most popular among office workers and is often solved during commutes on trains.