40.--_Lady Isabel's Casket._

The last puzzle was undoubtedly a hard nut, but perhaps difficulty does

not make a good puzzle any the less interesting when we are shown the

solution. The accompanying diagram indicates exactly how the top of Lady

Isabel de Fitzarnulph's casket was inlaid with square pieces of rare wood

(no two squares alike) and the strip of gold 10 inches by a quarter of an

inch. This is the only possible solution, and it is a singular fact

(though I cannot here show the subtle method of working) that the number,

sizes, and order of those squares are determined by the given dimensions

of the strip of gold, and the casket can have no other dimensions than 20

inches square. The number in a square indicates the length in inches of

the side of that square, so the accuracy of the answer can be checked

almost at a glance.

Sir Hugh de Fortibus made some general concluding remarks on the occasion

that are not altogether uninteresting to-day.

[Illustration]

"Friends and retainers," he said, "if the strange offspring of my poor

wit about which we have held pleasant counsel to-night hath mayhap had

some small interest for ye, let these matters serve to call to mind the

lesson that our fleeting life is rounded and beset with enigmas. Whence

we came and whither we go be riddles, and albeit such as these we may

never bring within our understanding, yet there be many others with which

we and they that do come after us will ever strive for the answer.

Whether success do attend or do not attend our labour, it is well that we

make the attempt; for 'tis truly good and honourable to train the mind,

and the wit, and the fancy of man, for out of such doth issue all manner

of good in ways unforeseen for them that do come after us."

The Canterbury Puzzles, and Other Curious Problems · 第 196 / 286 题