 
Copyright © 2002 by Rainer Typke
No zeros occur in this puzzle.
Across: A: The digit sum of A across equals E across plus the product of E across's digits.
C: A palindrome
E: A palindrome and prime number
G: G across divided by M down is a cubic number.
H: A prime number
I: This prime number equals the sum of J down and C down.
K: A palindrome
L: L across divided by J down is a square number.
N: F down divided by N across is a palindrome.
O: This palindrome is a multiple of E across.
Down: B: A palindrome
C: Divide G down by G across and calculate the square root of the result, and you get a divisor of C down.
D: A multiple of E across
E: I across + F down
F: A cubic number
G: A multiple of G across
J: C down  1
M: The product of the digits of M down equals A across.
