I had a problem with the queen on both colors. On one print job, the queen falls over near the end of the print job giving the king a "hair do"... But overall this is a very, very cool model. Kudos on the awesome design.
Upon closer inspection, the queen BROKE. It snapped off right above the round base at the narrowest point.
I put it inside my "poop lamp" filled with printer poop and failed prints.
Support Issue:Both knights needed support under the chin. They each had a little spaghetti chin going on that I had to snip off. The rest seemed to print just fine.