COArSe_D1RTxxx #1My move, rook to that corner, should be checkmate, since all squares are covered. The only reason it isn't is because Sente has a bishop in hand which I can't see.
COArSe_D1RTxxxedited #2I say “today's” because the CAPTCHA seems to refresh on a regular interval instead of every page reload, which is also probably a bug.