Source: 536 PUZZLES & CURIOUS PROBLEMS by Henry Ernest Dudeney
Introduction Henry Ernest Dudeney (the last name is pronounced with a long "u" and a strong accent on the first syllable, as in "scrutiny") was England's greatest maker of puzzles. With respect to mathematical puzzles, especially problems of more than trivial mathematical interest, the quantity and quality of his out put surpassed that of any other puzzlist before or since,...
