White To Play And Win

FROM the top board in this afternoon's third round of the Bradford U171.

White to make his 32nd move in Spanton (168) M Younis Quereshi (162)

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I played 32.a3, and the game continued 32...Rxa5 33.Bxa5 f6? (it is natural to want to get rid of a doubled pawn, but in this case the move is weakening) 34.Bc3 fxe5 35.fxe5 Rc8? (preventing a sac on c6, which was a real threat, but the analysis engines Stockfish10 and Komodo10 reckon Black should allow it, ie 35...f4 36.Rxc6! Qf5 - not 36...Qxc6?? 37.e6 etc - although White is much better after 37.h4 f3 38.Rf6 Rxf6 39.exf6 fxg2 40.Kxg2) 36.Rb7 Ra8? - makes for a quick finish, but 36...Rf8 37.Qh4 Rf7 38.Rb8 Rf8 39.Rxf8+ Kf8 40.Qxh7 should also win for White - 37.Qh4 h5 38.Re7 Qxe7 39.Qxe7 d4 1-0
However, White had an immediate win from the diagram with 32.Rxa8 Rxa8 33.Rxc6! Qxc6 34.e6. I saw that 34...f6 35.Qxf6 is hopeless for Black, but missed that 34...Kf8 fails to 35.Qg7+, the key points that I failed to spot being that Black is mated after either 35...Ke8 36.exf7+ Kd8 37.f8=Q+ etc, or 35...Ke7 36.Qxf7+ Kd8 37.e7+ Kc8 38.e8=Q+ Qxe8 39.Qxe8+ Kb7 40.Qd7+ Ka6 41.Qc6+ etc.