In its 50th anniversary year, the iconic Rubik’s Cube, a STEM-accredited puzzle, continues the tradition of nurturing brain development and cognitive skills for both the young and the young at heart. A symbol of intelligence, creativity, and perseverance, now, introducing a new twist to the classic puzzle with Rubik’s Gridlock. Challenge your flexible thinking and problem-solving skills by flipping over a challenge card to unveil your puzzle. Arrange the fixed white starter blocks as indicated on the card, then fit all the pieces onto the board without moving the blocker pieces. With 44 double-sided puzzle cards ranging from beginner to expert levels, this compact square game offers plenty of challenges while ensuring quick and easy setup and storage.