10.--_The Puzzle of the Squire's Yeoman._

Chaucer says of the Squire's Yeoman, who formed one of his party of

pilgrims, "A forester was he truly as I guess," and tells us that "His

arrows drooped not with feathers low, And in his hand he bare a mighty

bow." When a halt was made one day at a wayside inn, bearing the old

sign of the "Chequers," this yeoman consented to give the company an

exhibition of his skill. Selecting nine good arrows, he said, "Mark ye,

good sirs, how that I shall shoot these nine arrows in such manner that

each of them shall lodge in the middle of one of the squares that be upon

the sign of the 'Chequers,' and yet of a truth shall no arrow be in line

with any other arrow." The diagram will show exactly how he did this, and

no two arrows will be found in line, horizontally, vertically, or

diagonally. Then the Yeoman said: "Here then is a riddle for ye. Remove

three of the arrows each to one of its neighbouring squares, so that the

nine shall yet be so placed that none thereof may be in line with

another." By a "neighbouring square" is meant one that adjoins, either

laterally or diagonally.

[Illustration]

The Canterbury Puzzles, and Other Curious Problems · 第 34 / 286 题