Chapter VIII. Unicup.sal Problems.

Euler's Problem 170
Definitions 172
Euler's Results ... 172
Illustrations 176
Number of Ways in which a Unicursal Figure can be described . . 177
Mazes 182
Rules for traversing a Maze 183
The History of Mazes 183
Examples of Mazes 186
Geometrical Trees 188
The Hamiltouian Game 189
TABLE OF CONTEI^TS