Millenium 'O' puzzle (IPP19 exchange)

Designed and Produced By Dale himself, as his #278

Arrange the 4 x 4 tetromino's in a square so that no piece touches anpother piece of the same colour.

There are 13 more challenges to form a 8x8 square with different colour restrictions.
There are 12 more challenges to form a 4x4x4 cube with different colour restrictions.

     ---------- payment & shipping ----------
Payment via Transferwise (no fee) or Paypal (6% fee), or IBAN within EU (no fee).
Shipping cost is €20 outside Europe,  €15 within Europe, €6 within NL.
Multiple items can be shipped together, also with items recently bought from me via other auctions or marketplace.