Feature●One set contain 19 pieces number and one board.●Size:13.5*12.5*2cm/5.31*4.92*0.78 inch. Weight: 150g.●Rule: every row add up to 38.●Recommended for over 6 years old.●It is great to play with your partners. Also It is a great gift for adults and children.Description Wooden Math Hexagon Number Puzzle Sudoku Board Game