Sandwich Sudoku is a new variation on the classic game that introduces a new twist. You are provided with the sum of the numbers between 1 and 9 on each row and column.
This app helps you solve a Sandwich Sudoku by showing all the possible number combinations for that sum, which allows you to concentrate on the logic.
Note this app is not a game itself but a utility to help you solve a Sandwich Sudoku you are working on.
Available on the App Store now.