Henry Ernest Dudeney/Puzzles and Curious Problems/331 - The Siamese Serpent/Solution

by : $331$

 * The Siamese Serpent

Solution

 * The drawing cannot be executed under the conditions in fewer than $13$ lines.


 * The longest of these lines is one which starts at $A$ and ends at $B$ in the diagram.


 * Dudeney-Puzzles-and-Curious-Problems-331-solution.png


 * The dotted lines are the ones which have been omitted.
 * Thus, the unbroken line from $D$ to $C$ is longer than the broken one, so we take the former.
 * Again, we get a little more of the drawing by taking the tongue rather than the mouth,
 * but the part of the tongue ending in a single line has to be omitted.