Creative Building Logic Game Block By Block expands your spatial problem-solving skills as you combine seven puzzle pieces to construct three-dimensional structures depicted on the 60 challenge cards. The puzzle pieces are the same as the famous Soma Cube of the 1970s. This logic game is tough – and very fun! Features: 60 Challenge Cards with Hints and Solutions, 7 Puzzle Pieces, Game-Go Bag and Instructions Type: Brainteasers Skill: Logic and Problem Solving Age: 8 and Up Players: 1