From this equal position, Black over-presses due to a concrete resource, and White is able to punish him for it.23....Rd2?!23...Re624.f4g525.Ng4(25.g3Nh5!)Nxg426.f5!Rb627.hxg4c528.Kf2cxb429.c424.Nc4Rc225.e5Nd5Black's plan had to be connected with this sequence, as now the threat of ... Nd5xb4 wins a clean pawn. However, Khachiyan shows fantastic understanding of the resulting endgame.26.Rd1c626...Nxb4??27.Ne3is a tactical refutation, of course.27.Rd2Nxb4Black's whole point was to save the pawn here.28.Rd8+...28.Rxc2Nxc229.Na5was also promising.28....Kh729.Rd7b530.Ne3Rc1+31.Kh2Nd532.Rxf7Nxe333.fxe3...The endgame is won for White, as Black's rook has no good way to cover the e-pawn. This is a funny instance of White's doubled pawns actually being an asset.33....Re134.Rf3Rd135.Kg3Rd836.Kf4Kg637.Ke4Re838.b4Re739.Rf81-0 White wins.1-0