**Competition closed** – answer here.

This cryptarithmetic puzzle substitutes each letter for a number in order to make the multiplication below valid. This puzzle is based on the name of the great David X. Cohen (a writer on *The Simpsons* and co-creator of *Futurama*), such that his middle initial represents a multiplication sign. The nine different letters in DAVID COHEN represent the digits 1 to 9.

**DAVID x COHEN = 763860049**

**Competition closed** – answer here.

Big thanks to James Grime (@jamesgrime), who invented this puzzle.

If you are new to cryptarithmetic puzzles, then here is a primer.