Henry Ernest Dudeney/Puzzles and Curious Problems/271 - Avoiding the Mines

Puzzles and Curious Problems by Henry Ernest Dudeney: $271$

Avoiding the Mines

Here we have a portion of the North Sea thickly sown with mines by the enemy.

A cruiser made a safe passage through them from south to north in two straight courses, without striking a single mine.

Take your pencil and try to discover how it is done.

Go from the bottom of the chart to any point you like on the chart in a straight line,

and then from that point to the top in another straight line without touching a mine.

Sources

• 1932: Henry Ernest Dudeney: Puzzles and Curious Problems ... (previous) ... (next): Unicursal and Route Problems: $271$. -- Avoiding the Mines
• 1968: Henry Ernest Dudeney: 536 Puzzles & Curious Problems ... (previous) ... (next): Geometrical Problems: Dividing-the-Plane Puzzles: $300$. Avoiding the Mines