Please give the missing digit : it is a three by three puzzles, the first row has a 9and 7 ,but missing a first number, the second row has a 4, missing the first and third number and the last row is empty.
the second thre by three square has a 3 in the first row,second row is empty, and third row has a 7 in the first box and 1 in the last box.
the last three by three box has a 1 and 6 inthe first row, the last box is empty
A Sodoku puzzle is solved. The solution is detailed and well presented.