A 4x4x4 snake (64 blocks) that stays in one piece and twists all about. Can you return it to the cube? It is MUCH more difficult to tame than the regular 3x3x3 snake. Three to five hours is an excellent solution time.
This King pattern with the checkerboard blocks is very tough even though there are two possible solutions, as the cube colors give very little hints as to the correct solution path. Highly recommended, especially for those who have mastered the regular snake.
Difficulty Level: 5 ages 10+
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