In this cross-number puzzle, each square in the diagram
is to contain a digit from 1 to 9; no zeroes are used.

DIAGONAL
1   From top to bottom, each digit is greater than the digit preceding it.

ACROSS
1   A number divisible by 11.
3   The number formed by the first two digits is the sum of the last two digits.
6   Each digit is greater than or equal to the digit preceding it.
8   The last digit is odd.
9   A number divisble by 11.

DOWN
1   See 4-Down.
2   The number formed by the last two digits is twice the number formed by the
      first two digits.
4   The sum of 1-Down and 7-Down.
5   The number formed by the last two digits is twice the number formed by the
      first two digits.
7   See 4-Down.




Solution to the Problem:



Correctly solved by:

1. Eliza Sheffield and Anna Tetzlaff Epiphany Cafe in Tuscaloosa, Alabama
2. Marcelo Hernandez Carthage College,
Kenosha, Wisconsin