In this position, Black has only one rook for White's two minor pieces. Sothe only question is whether White's able to solve the problem of hisa4-Knight. In case of a positive solution, there's no reason why Whiteshouldn't be simply winning.30.Qe3...The Russian Grandmaster couldn'twork out the immediate...30.Nc3It works tactically, with the cirticalline obviously beingRxc3(30...Qc531.Qf6Rf832.Rxb3with anabsolutely winning position.)31.bxc3b2the most important is not to stopthe calculation here and check this position for White's ideas. It appearseverything works great for White after...32.Ra7Rb7(32...Qxa733.Qxa7b1=Q34.Qxf7+Kh835.Qxg6and White has toomuch material for being exchange down. Morevoer, the Black King is veryvulnerable.)33.Rxb7Qxb734.e5the key move.dxe5Black is lost now.(34...b1=Q35.Bxb7Qxb736.exd6)(34...Qb835.Be4dxe536.Qb4)35.Bxb7exd436.Be4dxc337.Kg2Kg738.Kf3with an easy win.30....Rc231.Ra1...After this second mistake, White's not better anymore.Instead31.e5dxe532.Be4would still maintain the advantage.31....Qa532.Qf4...It was definitely not the best day for Sergei Rublevsky.After32.Qd4White would still maintain the balance. For example:Rd233.Qe3Rxb234.Nxb2Qxa135.Qc332....Kg7Black is already better.33.Qxd6...More stubborn would be33.Qe3Rc434.e5Rxa435.Rxa4Qxa436.exd6Qd7Black still needs to show some technique.33....Rd8Now it's over. Therest is very simple.34.Qa3Rd335.Qe7Rdd236.Nc3...Only now White canplay Nc3, but it's obviously too late.36....Qxa137.Qe5+Kh738.Nd5Rxd5