- Ad-free interface
- Unlimited analysis time (unleashing the full power of Stockfish)
- Unrestricted chat
- PGN file download
There are a couple of caveats, however:
- We expect the chat to become almost unusable due to the tremendous message flood. You will see why the restrictions we have in place are necessary :) Unfortunately, the chat room paradigm is not designed for many thousands simultaneous posters in a single room.
- The Premium features put the server infrastructure under greater stress. When enabled for everyone, the stress is significant. So small disasters are possible... although we expect to hold well.