Board dimensions: 5 x 5 x 1.5 inches (Travel Size)nHas built in storage for piecesnFeatures magnetic closurenComes with board, a complete set of pieces, and instructionsnCreate your own puzzles or replicate ones you find in the newspaper and books on this wood boardnSudoku is a logic-based number placement puzzle. The objective is to fill a 9×9 grid so that each column, each row, and each of the nine 3×3 boxes (also called blocks or regions) contains the digits from 1 to 9 only one time each. The puzzle setter provides a partially completed grid.