Hoffmann, Professor, 1839-1919 · London : Frederick Warne · leaf 90
Fie. £5. Fig. 96. No. XLI.-The Ebony Puzzle Ball. Solution. On minute inspection of the ball, it will be found that 68 Puzzles Old and New. close beside oneof the little bosses is a minute depression,scarce bigger than a pins head. This serves to indicate theposition of the opening, of which the…
Puzzles
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