41.--_The Riddle of the Fish-pond._

[Illustration]

At the bottom of the Abbey meads was a small fish-pond where the monks

used to spend many a contemplative hour with rod and line. One day, when

they had had very bad luck and only caught twelve fishes amongst them,

Brother Jonathan suddenly declared that as there was no sport that day

he would put forth a riddle for their entertainment. He thereupon took

twelve fish baskets and placed them at equal distances round the pond, as

shown in our illustration, with one fish in each basket.

"Now, gentle anglers," said he, "rede me this riddle of the Twelve

Fishes. Start at any basket you like, and, always going in one direction

round the pond, take up one fish, pass it over two other fishes, and

place it in the next basket. Go on again; take up another single fish,

and, having passed that also over two fishes, place it in a basket; and

so continue your journey. Six fishes only are to be removed, and when

these have been placed, there should be two fishes in each of six

baskets, and six baskets empty. Which of you merry wights will do this in

such a manner that you shall go round the pond as few times as possible?"

I will explain to the reader that it does not matter whether the two

fishes that are passed over are in one or two baskets, nor how many empty

baskets you pass. And, as Brother Jonathan said, you must always go in

one direction round the pond (without any doubling back) and end at the

spot from which you set out.

The Canterbury Puzzles, and Other Curious Problems · 第 68 / 286 题