Chalkboard 3 - 1000 Piece PuzzleBlackboard Think Outside the Box is a 1000 piece jigsaw puzzle which can be used as an actual blackboard when completed. The Black Board puzzle range is a new range from Clementoni. Once you have assembled the puzzle, simply apply any standard PVA glue on the back, then hang it up wherever you wish and use as a chalkboard. Completed puzzle size: 50 x 69cm Chalk, glue and frame are NOT included. Clementoni puzzles are manufactured using quality