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

Across:
Prime Number(A across)
D across = A down / C down
Prime Number(F across)
Square Number(G across)
H across = Digit Sum(D across) * (E down + 2)

Down:
B down = reverse(A across)
Digit Sum(C down) = 1st digit of D across
Palindrome(E down)

Copyright (C) 2002 by Rainer Typke. All rights reserved.