[Event "Naberezhnye Chelny, 1988"] [White "A Andreev"] [Black "Sergei Khmelnitsky"] [FEN "r3k2r/1ppq1ppp/1p2P3/n3Pb2/1bP2Q2/2N2N1P/PP4P1/2KR1B1R b - - 0 1"] %Hidden=1 1... Nb3+ 2. axb3 Ra1+ 3. Nb1 Rxb1#