|Eyal: Position after 39.Qc3(?):
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Here Vitiugov missed a spectacular win by 39...Rc6!!; 40.Qxc6 Qe1+ with immediate mate; 40.Nxc6 Qb1+ 41.Kh2 Bf2 and the mate threat on g1 is decisive. Relatively best for White is 40.Qd3, but Black still gets a winning advantage by 40...Rc1+ 41.Kh2 Qxd3 42.Nxd3 Rc3 43.g3 (43.Nc5? Bg3+ and mate) 43...Bxg3+ 44.Kxg3 Rxb3 followed by Rxd3 and Rxd4.
Interestingly, an immediate 39...Qb1+ 40.Kh2 Bf2 fails to 41.Rxg7+!! Kxg7 42.Qc7+ and after several checks, when the white queen reaches f7 and the black king is pushed to h8, Ng6+. That's why the interposition of 39...Rc6 is necessary - so that after 40.Nxc6 the white knight is diverted from e5 and blocks the route of the white queen to c7.
A second time in this tournament in which one of Svidler's opponents misses a spectacular move that places a piece on a seemingly unprotected square, where it can be captured by two enemy pieces... (see Svidler vs K Maslak, 2008)