Christmas sudoku game to play online, with Christmas symbols instead of numbers. Choose the size of the sudokus, 4x4, 6x6 and 9x9. Within each level, choose a difficulty, depending on which sudoku starts with more or less symbols on the boards. Place all the Christmas symbols in the Sudokus so that they are unique in each row, column and in each sub-square of the Sudoku. The game helps by adding a number in addition to the Christmas symbol.