Designed by Noam Elkies (youngest tenured professor at Harvard!)Made by George Miller.(c) 2004Still in its original shrinkwrap.Why do I say this is very rare?  I can't find any prior auctions or any other online information about this puzzle.Note that this appears at first glance to be a typical 2D packing puzzle, with typical pieces (zoom in on the primary image to see them).  However, it's something quite different.  You can read the instructions in the yellow image.  A very clever idea!Th...

Exchange puzzle from John Ergatoudis at IPP 22 in Antwerp in 2002.Designed and produced by Jean-Claude Constantin.Sorry for the spoilers, but it is still in the original shrinkwrap.The puzzle is located in the United States, but I will ship worldwide.Customs forms for international shipments will reflect actual payments.Payments can be made through PayPal (Friends & Family preferred).Buyer to pay shipping calculated after auction.Please wait for the updated invoice before making payment. 

IPP34 London (2014) Exchange Puzzle from Nick Baxter.Designed by and made by Nick Baxter.Goal: Place the nine tiles flat into the square tray.The puzzle is located in the United States, but I will ship worldwide.Customs forms for international shipments will reflect actual payments.Payments can be made through PayPal (Friends & Family preferred).Buyer to pay shipping calculated after auction.Please wait for the updated invoice before making payment.