Henry Ernest Dudeney/Modern Puzzles/161 - A Motor-Car Puzzle

Modern Puzzles by Henry Ernest Dudeney: $161$

A Motor-Car Puzzle

A traveller starts in his car from the point $A$ and wishes to go as far as possible while making only $15$ turnings, and never going along the same road twice.

The dots represent towns and are one mile apart.

Supposing, for example, that he went straight to $B$, then straight to $C$, then to $D$, $E$, $F$, and $G$,

then you will find that he has gone $37$ miles in five turnings.

How far can he go in $15$ turnings?

Sources

• 1926: Henry Ernest Dudeney: Modern Puzzles ... (previous) ... (next): Unicursal and Route Problems: $161$. -- A Motor-Car Puzzle