Sudoku Mine comes from Stanley Lam. Stanley has produced many good free puzzle app games the past 2 years. I can't keep up!
Sudoku Mine is a mixture of Minesweeper and Sudoku. It's closer to Minesweeper. The object of Sudoku Mine: place 3 flags to represent bombs. Each row, column and square region must have exactly 3 bombs.
There are 50 free levels ranging in difficulty from beginner to extreme. I did 49 of them and am stuck.
Fabulous, fast & fun. I bought the full version for $1.99. Of course, I have to keep play testing other puzzle apps. The $1.99 was my way of saying thanks for 3 hours of entertainment.