1.e4e52.Nf3Nc63.Bc4Nf64.d3Bc55.O-Od66.c3h67.b4Bb68.a4a59.b5Ne710.Be3Bxe311.fxe3Ng612.Bb3c613.c4d514.exd5cxd515.c5Qe716.d4Ng417.Nc3Be618.Qe1e419.Nd2Qc720.Qg3Qxg321.hxg3Ne722.Rae1h523.Bd1Nf624.b6Nf525.Kf2Bd726.Rh1Rh627.Rh2...We pick up in the middle of an unusual game. Black's weak d5-pawn is a lasting nuisance, and the advanced pawns on the queenside compensate for the doubled, isolated g-pawns.27....Bc6?27...Ne728.Reh1Bg4was the resource Black needed.(28...Ng4+?!29.Bxg4Bxg430.Nb3is promising, with Nc3-b5 next.)29.Nb3?(29.Be2Kd730.Nb3Rg631.Bb5+Kd8⩲)Bxd1wins material.28.Reh1Ke729.Bxh5Rxh5?29...Rah830.g4g631.gxf5gxh5is not promising for Black, but might be better than the text.30.Rxh5Ng4+30...Nxh531.Rxh5Ke632.g4Ne733.Re5++−31.Ke1Ngxe332.Nb3Kf632...Nxg333.Rh8!±is a rejoinder to Black's attempted fork.33.Rh8Nc2+Behind on the clock, Black creates a last batch of complications.34.Kd2?...34.Kd1is apparently best:Ncxd4(34...Rxh835.Rxh8Nb436.Nxa5Nxd437.Nb5+−)35.Nxd4Rxh836.Rxh8(36.Rf1?no longer works for a truly baffling reason.Rh1!!37.Rxh1Nxd438.Rh8Ne6=)Nxd437.Rc8+−34....Ncxd4!35.Rxa8?!...35.Nxd4Rxh836.Rf1!±is the way to go, as the threat of g3-g4 forces(36.Rxh8is no longer good, asNxd437.Rc8Nb3+comes with check, winning the c5-pawn!38.Ke2Nxc539.Nxd5+Ke640.Nc3f6=)Ke5when37.Nxf5d438.Nb5e3+39.Ke2Bxg240.Rg1Bd541.Nfxd4±is far from clear, but White is still ahead.35....Nxb3+36.Kc2Nxc5??A calculation error in mutual time pressure. By this point, Robson is aware that he is in a "must-hold" match situation.36...Nfd4+37.Kd1Nxc5!is different as now there is no pinning Rh1-f1.38.Rh5(38.Rxa5Ndb339.Ra8d4⩱)g539.Rxa5Nde6is a very stubborn defense despite being down two Exchanges!37.Rf1!Ke538.Rxf5+!...The resource Black overlooked.38....Kxf539.Rxa5+−...White is only one point of material, but will soon make it a full Exchange, neutralizing Black's connected central passers in the process.39....Nd340.Nxd5Kg441.Kd2g642.Ke3f543.Ne7Bd744.Nxg6Kxg345.Ne7...Korobov shows fine technique to convert:45....Kg446.Ra8Be647.a5Nc548.Ng6Kg549.Nf4Bd750.Rd8Bc651.Rd6Be852.Ne6+Nxe653.Rxe6Bb554.g3Ba655.Re8Kg456.Rg8+Kh357.Rg51-0 White wins.1-0