THE PROFESSOR'S PUZZLES
71.—
Romeo s Second Journey.
"It was a sheer stroke of luck on your part, Hawkhurst," he
added. " Here is a much easier puzzle, because it is capable of
more systematic analysis ; yet it may just happen that you will not
do it in an hour. Put Romeo on a white square and make him
crawl into every other white square once with the fewest
possible turnings. This time a white square may be visited twice,
but the snail must never pass a second time through the same corner
of a square nor ever enter the black squares."
" May he leave the board for refreshments ? ** asked Grigsby.
" No ; he is not allowed out until he has performed his feat.**
72.—
The Frogs Who Would a-Wooing Go.
While we were vainly attempting to solve this puzzle, the
Professor arranged on the table ten of the frogs in two rows, as they
will be found in the illustration.
" That seems entertaining,** I said. " What is it ? "
" It is a little puzzle I made a year ago, and a favourite with the
few people who have seen it. It is called * The Frogs Who Would
a-Wooing Go.* Four of' them are supposed to go a-wooing, and
after the four have each made a jump upon the table, they are in
such a position that they form five straight rows with four frogs in
every row."
"What's that ? ** asked Hawkhurst. " I think I can do that.** A
few minutes later he exclaimed, " How's this ? **
87
