Play a new twist on the classic Rubik`s Cube with a game made to challenge your flexible thinking, speed, and problem-solving skills. Flip over a Gridlock challenge card to reveal your puzzle, and place the fixed starter blocks as shown on the challenge card. Your goal is to figure out how to place all your remaining blocks on the board without moving the starter blocks. There is only one way to solve the puzzle for each challenge card, so choose your next moves wisely!