1.e4 e5, 2.Nc3 Nf6, 3.Bc4 Nc6, 4.d3 Bb4, 5.Nf3 d6, 6.Be3 Bg4, 7.Castle(Kingside) OO, Qd7, 8.Nd5 NxN, 9.exN!?/(BxN!) was better! Nd4, 10.c3(pawn fork) NxN+, 11.gxN Bh5(The Master Move), 12.cxB! Qh3!, 13.Qa4+ Kd8!(The point of No Return for Black King; as far as castling is concern), 14.Bg5+ f6, 15.Qb5 Bxf3, 16.Bxf6+ gxB, 17.Qd7+ KxQ, 18.Bb5+ Ke7, 19.Rfc1 Rhg8#Checkmate!  Reference made to the Vienna Game C25-C29.  Question; if the opponent playing the white chessmen had a rating during the match at 1750, who and what was the rating of the player playing the black chessmen?  Good Luck it's a Thriller!