[#] It's Black to move and they are down an exchange and a pawn. Is it lostfor them?1....Bc6Pinning the Rook and forcing Kg2.2.Kg2...Now Blackneeds to make only correct move in order to win.2....f5Placing White in adeadly pin they can never get out of!2...b5If this move or any other,White will escape playing g4.3.g42...Bxf3+Is wrong as Black get'spawn down endgame which is lost.3.Kxf33.b5...3.g4fxg43....Bd53...Bxb54.Rxf54.a4...What would you play to capture the Rook on f3 for free?4....g55.a5g4