Sandwich Sudoku is a new game developed by Nick Carney and presented by Cracking The Cryptic, a popular YouTube channel for Sudoku enthusiasts. This game has become an internet sensation due to its unique approach to the classic Sudoku game. The puzzle is presented with extra numbers outside the grid next to each row and column, indicating the SUM of cells sandwiched between the 1 and the 9 in that row/column. The game includes 100 hand-crafted levels, each lovingly designed by Mark Goodliffe and Simon Anthony, who have both represented the UK in the World Sudoku Championship.

Sandwich Sudoku is perfect for anyone who enjoys Sudoku and basic math. It offers a new challenge that will test your logic and reasoning skills. In addition to the challenging puzzles, the game also includes many themes to choose from and hints written by Mark and Simon. Overall, Sandwich Sudoku is an excellent game that offers a new take on the classic Sudoku game, and it is sure to provide hours of challenging and entertaining gameplay.