Meeting Point in a 3D Maze

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Layers of a 3D maze are shown from top to bottom. You can move horizontally within a layer if there is no wall between compartments. You can move from a compartment with a white floor to the one immediately below it and back. The red and green points approach each other in each step. Where will they meet?

Contributed by: Izidor Hafner (October 18)
Open content licensed under CC BY-NC-SA



[1] M. Gardner, The Colossal Book of Short Puzzles and Problems (D. Richards, ed.), New York: W. W. Norton, 2006 pp. 280–281.


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