As you know from Tough Puzzle Part 1 and Tough Puzzle Part 2 TOUGH+TOUGH=PUZZLE,
TOUGH+TOUGH+TOUGH=PUZZLE
and TOUGH+TOUGH+TOUGH+TOUGH=PUZZLE have valid solutions.

Besides these three, there are several other valid ones. How many of them can you find? What is the greatest number of times that TOUGH can be added to make PUZZLE?

This problem was suggested by Brian Smith and endorsed by Jer, whom I wish to thank.

(In reply to computer solution by Charlie)

Yeah I came up with those solutions in my head, and I've got land 50 miles east of Norfolk VA to sell you too.

Posted by jduval on 2007-08-24 05:22:36