Invented by Swiss mathematician Blaise Miller, this is the board game that has won 17 international awards. It is an abstract strategy game that requires deductive reasoning, but has won its awards due its easy-to-learn 15-minute gameplay. The wooden pieces have four characteristics: light/dark, tall/short, square/round, or hollow/filled. Each turn, an opponent chooses which piece you play; if you form a line of four pieces with one characteristic in common, you win. If you can’t, you choose a piece for your opponent to play. The game progresses until a winner is decided or all pieces have been played. 11" sq. wooden playing board. Ages 8 and up.