5   7   2   4
  6       3  
3     5     7
    1   6    
4     7     6
  7       4  
6   2   5   1

This puzzle is a variant of Sudoku I like to call "Prosperity 7". In this Sudoku variant, the board is only 7x7, and only the numbers from 1 to 7 are used. Neither 8 nor 9 are ever placed on this board.

The object of this puzzle is to place the numbers 1 through 7 in the blank spaces such that: