Genius Hockey Puck Twist & Turn Puzzle Twist and turn brain teaser puzzle. Manipulate numbers from front to reverse side. Twelve different number placement objectives. One side has no numbers (its blank). Other side number 1 to 12 Show just numbers 12 & 1 (on reverse side); then show numbers 12 & 2; then 12 & 3 etc up to 12 & 11. Outside colored ring rotates around the center black ring. When positioned correctly the two halves (180 degree segments) rotate opposite each other