Article: New word recreations.

In the November issue, Jim Puder nicely extended Harold Jacob's "Three Jog Knight" (WW Aug 2008) to a Five-Jog Knight puzzle. Puder and the editor solved the problem and its solution appears in this issue. I wish to extend their results and point out some new puzzles and games that can be performed with their words.

First, many graphs can be treated as maps of cities upon which one could ask for a route that visited every city exactly once and returned to the city it started from. This is called a Hamiltonian circuit after the Irish mathematician Sir William Rowan Hamilton, and sometimes, is referred to as the "traveling salesman's problem". For the Five-Jog ...

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