Oh come on. An avid chess player could beat even the most powerful bot. I'm pretty sure that chess is one of the hardest board games to "exploit" with automation. In the past there have been attempts to create multiplayer online board game lobbies with betting. Gambit.com would be an example. But it doesn't accept bitcoin any more.
I wish this website can become a great platform for chess because I love both chess and bitcoin.
An avid chess player cannot beat top-tier chess software, which is free. Stockfish has a rating of 3000+ and the top player in the world plays at a rating of ~2800