A sample crossnumber puzzle.
Author: Rainer Typke, [email protected]

Across:
A across = the last two numbers are a power of the first number
D across = a square number
E across = a cubic number

Down:
A down = a fibonacci number
B down = All digits are even
C down = the three digits are a Prime number
Copyright (C) 2002 by Rainer Typke. All rights reserved.