On Jun 15, 4:38*am, wrote:
http://www.niquette.com/puzzles/cornrefp.htm

And check out the solution to the puzzle at
http://www.niquette.com/puzzles/cornrefs.htm
The commentary by Myles Buckley on the solution, starting about
halfway down the page, explains very well why I so much like flashing
lights on my bike, front and rear, day and night.

Andre Jute
A little, a very little thought will suffice -- John Maynard Keynes
A good education helps too -- Andre Jute