This checkin to GC3WYMN Tactically Clever Placing reflects a geocaching.com log entry. See more of Dan's cache logs.
Solved the puzzle long ago – helps that I have a Universal Drive for Perfection and know my numbers. But came by the GZ today and had no luck. Hunted in and around the obvious candidate – my shoelaces must be super loose! – and then its two friends without success. Maybe I’ll revisit when it’s less busy here.