Given the figure on the left (without looking at the solution on the right), determine how to disengage the two slotted Cube halves without cutting, breaking, or distorting.

**References**

Dudeney, H. E. *Amusements in Mathematics*. New York: Dover, pp. 145 and 249, 1958.

Ogilvy, C. S. *Excursions in Mathematics.* New York: Dover, pp. 57, 59, and 143, 1994.

© 1996-9

1999-05-25