Not sure why this didn't work for Jaimie and Josh - it should have. Here's your logical answer Miguel: anytime you take two numbers (at least two digits long) that are different combinations of the same digits (like 841 and 418, for example) and subtract one from the other, the digits making up the remainder will either sum to 9, or sum to another combination of numbers that sums to 9. This program just uses the digits you provide (minus the one you've left out), adds them together and subtracts them from 9 to perform its "magic". Somehow it seems this should lead into a math-rock thread. Amy ----- Original Message ----- From: "Miguel Motta" To: Sent: Monday, May 09, 2005 8:38 PM Subject: Mind boggler Totally non-musical related BUT what a mind-boggler! Try it... Follow the instructions carefully... on the last page where you're asked to type in your reply just do so as it doesn't cursor... you'll be amazed (and if someone can come back with a logical solution....) http://digicc.com/fido/ Cheers, Miguel