on 5/14/01 9:12 PM, Jay Reeve at jktr@... wrote:

> I hope someone soon will publish a 2-dimensional Rubik's cube. I might
> have half a chance of solving that in this lifetime. :-)

The "15" puzzle, invented by Sam Lloyd at the end of the 19th century, is
the 2-dimensional equivalent of the Rubik's cube. It's the one with 15
sliding pieces, numbered from 1 to 15 with the odd numbers 1 color, usually
white, and the even numbers another color, usually red, in a 4 by 4 square.

Charlie Dickman
3tothe4th@...