This can be done anywhere, but the best/easiest place to do this is on a Golden Tile daily challenge. Choose an easy or medium golden tile challenge (make sure there are at least 3 pairs - some easy challenges only have 2), and match away all of the non-golden tiles until all 6 (or at least 6) golden tiles are either exposed and able to be matched, or are only blocked by another golden tile. Proceed to make 3 back-to-back golden tile matches.