Walk a Crooked Path is a pen-and-paper puzzle that I designed. I used it as the exchange gift for the Gathering for Gardner 14 conference in 2022.
Below is a 7×7 board with three squares removed.
You walk a path from square to square (adjacent horizontally or vertically), without visiting any square more than once. You may start on any square and end on any square, and do not need to visit every square. Find a path that has as many quarter turns as possible, i.e. what is the most crooked path you could walk?
For example, the following short path has 7 quarter turns.
If you want to try this with pencil and paper, you can print out this pdf file (735KB), which is what I handed out at the G4G14 conference. It contains several copies of the empty board.
© Copyright 2022 Jaap Scherphuis, g4g a t jaapsch d o t net.
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