This is a classic sudoku game. You can select any one of three grids(4x4, 6x6 or 9x9) and can set difficulty level. The objective is to fill a selected grid with Christmas items so that each column, each row, and each of the respective sub grids that compose the grid contain all of the items without repeating anyone. Christmas Sudoku, Sudoku Game, Christmas Puzzle, HTML5 Sudoku, Mobile Sudoku, Online Sudoku, Logic Puzzle, Brain Training, Holiday Puzzle, Festive Puzzle, 4x4 Sudoku, 6x6 Sudoku, 9x9 Sudoku, Educational Game, Board Game, Puzzle Game