36...Qd8+ only looks better to a computer. The idea is 37. f6 hxg4 38.Nxg4 gxf6 threatening ...Rh7+ or 37. Kg3 Qd6+ 38. Kh4 Qh6! But Anand's 36...g5+ is much e

36...Qd8+ only looks better to a computer. The idea is 37. f6 hxg4 38.Nxg4 gxf6 threatening ...Rh7+ or 37. Kg3 Qd6+ 38. Kh4 Qh6! But Anand's 36...g5+ is much easier for a human to play. It's easier to see White's reasonable responses and how to deal with them. Anand never made a move that let go of his winning advantage, and all the (mild) criticisms of his play are based on moves that computers think win a little faster; but a human should play to win as reliably as possible, and that's what he did. I am astonished though by Topalov's mistakes capturing the f and e pawns. They were inexplicable, because they're not really tactical errors at all; they simply show terrible positional misunderstanding.