Bill: Last night I was hosting a puzzle party at Key Curriculum Press, which has a yearly teachers seminar. I had brought your puzzle, and at least two people were asking if it was available. I told them I though you might still have some, that they were somewhere around $60 or $80 (or maybe more), I couldn't remember. They might get in touch directly with you, or they might email me first, I'm not sure. Are there still some available? By the way, I brought it to Sonoma State last April (they have a Math Day, and I usually bring up puzzles for them), and one of the students solved it. I've written down his answer, but not yet checked against Peter Rasmussen's answer, and I don't have your answer. -- Stan -- Stan Isaacs 210 East Meadow Drive Palo Alto, CA 94306 stan@isaacs.com