Ambiguous Sudoku

 *-----------*
 |...|...|...|
 |873|954|612|
 |...|..6|8..|
 |---+---+---|
 |..8|593|764|
 |965|742|138|
 |437|618|925|
 |---+---+---|
 |396|287|451|
 |742|165|389|
 |581|439|276|
 *-----------*