Hoffmann, Professor, 1839-1919 · London : Frederick Warne · leaf 108
Fig. 112. Fig. 143. … Fig. 144. No. V.—The Circular Puzzle. This is a new departure, the slab out of which the severalsegments are formed being circular, instead of rectangular.The number of segments is in this case ten (see Fig. 145).
Puzzles
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