Your move was 23. Ka4. White can play 24. Rc5 and after that 25. Ra5# is checkmate. You're best response to 24. Rc5 is 24. b3, but that only delays checkmate by one move. After white plays 25. a3, there is nothing you can play to 26. Ra5# checkmate. That's simply mate in three.
You best move is 23. Rb8, because white can't play the same line with Rc5 first and then Ra5#. Your King is still defending the c5-square. After the Bishop takes with 24. Bxb8 you can move you King to a more open square (24. Kb6). White will need at least 5 more moves to checkmate you.
Stockfish isn't on anything. Stockfish is technically correct that Rb8 is better than Ka4. In both cases you're going to lose the game, but it will take twice as long if you play Rb8 instead of Ka4. When all possible moves lead to checkmate, you shouldn't worry too much about which move is better than the other.
Hi everyone; I have heard that stockfish is the best ChessBot out there; nonetheless it decided that "developping the rook, defending the king"; the rook being my only backrow piece left apart from the king because I suck at chess, was the best move even though it would've made me lose the rook without anything in exchange.
I would've understood if it told me "rook on c8, attack bishop (pin against enemy rook)" but on what crack is our beloved bot on ?
I really don't understandw why this play is the best could someone explain to me why, please ?
(I doubt anyone will want the game but here it is anyways https://www.chess.com/game/live/117369570439)