The brain-bending fun really stacks up with this vertical take on traditional kanoodle! Perfect for solo play or a two-player challenge, players put their puzzle skills to the test to complete 40 gravity-defying puzzles or alternate placing pieces with a friend. Simply select a challenge from the guide, place the pieces as shown, then use the remaining pieces to complete the puzzle-or take turns placing the pieces. If a players piece doesn't fit-they lose the round! Set includes kanoodle gravity puzzle board, 10 colorful puzzle pieces, guide with 40 puzzle challenges, and carrying case.