This was the exchange puzzle of Carlo Gitt for IPP 25 in Helsinki in 2005.
The puzzle comes with 13 different pentacubes and 31, yes 31, different challenges. See the final photo for additional details.
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.