The "Math Misery" blog has several problems like this, for example http://mathmisery.com/wp/2017/04/02/cryptarithmetic-puzzle-81/ http://mathmisery.com/wp/2017/

The "Math Misery" blog has several problems like this, for example http://mathmisery.com/wp/2017/04/02/cryptarithmetic-puzzle-81/ http://mathmisery.com/wp/2017/04/02/cryptarithmetic-puzzle-8...