There seems to be a slight bug in player puzzles for me. Two of Penguian’s puzzles don’t load a thumbnail of the puzzle shape on the puzzle list and puzzle detail pages. The one is ARC - http://eterna.cmu.edu/puzzle/Challeng… - and the other is Eight, Mate - http://eterna.cmu.edu/puzzle/Challeng….
The other puzzles seem to be fine.
Chaen