Unequal Length Maze

Rules

Find a path from “S” to “F” passing through centres of all cells horizontally or vertically exactly once. The path must alternate between horizontal and vertical segments where two consecutive segments cannot be the same length.

(Rules and example from WPC 2017 IB)

History of the puzzle

First appeared on Erich Friedman's (USA) website in 2006.

Appearances in the past WPCs

• WPC 2017/Round 12 by
• WPC 2014/Round 6
• WPC 2014/Individual Playoffs