The Puzzling World of Polyhedral Dissections
By Stewart T. Coffin

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Chapter 13 - Puzzles Using Hexagonal or Rhombic Sticks
A Triple Decker Puzzle

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If the Cuckoo Nest Puzzle is regarded as having two layers, one way of expanding it is to add a third layer of three more sticks and three more dowels. One such version is shown in Figs. 133a and 133b. It likewise has a threefold axis of symmetry. It has only one solution and is more difficult than the Cuckoo Nest Puzzle, the Locked Nest Puzzle or its variations. Other even more complicated versions are possible with additional layers.

Editor's Note: Stewart named this puzzle Nine Bars.

fig133a

Fig. 133a

fig133b

Fig. 133b

©1990-2005 by Stewart T. Coffin
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