Our Number Puzzle Panel 1-15 will be enjoyed by all of your children! The classic children's handheld puzzle is now bigger and better! The object: slide the 15 numbers around the board in order to place them in numerical order. Counting, logic, and analytical skills are challenged through fun play. Once the puzzle is completed, mix up the numbers and start all over again! A classic game that keeps both kids and adults busy for hours! Dimensions: 20x20x2