Two of Alekhine's guns pointed at one lonely pawn

[User923005]

[Event "40 Züge in 8 min"]<br> [Site "Werner"]<br> [Date "2011.09.30"]<br> [Round "25.1"]<br> [White "Gaviota 0.84 x64 1CPU"]<br> [Black "Colossus 2008b"]<br> [Result "1/2-1/2"]<br> [ECO "A17"]<br> [EventDate "2011.??.??"]<br> [Variation "English: Queens Indian formation (postponed d4)"]<br> <br> 1.c4 Nf6 2.Nc3 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Re1 Bb4 8.d3 Nc6 9.Qa4 Qe7 10.Bf4 Bxc3 11.bxc3 d6 12.Nd2 Na5 13.Nb3 Nxb3 14.axb3 Bxg2 15.Kxg2 h6 16.Qa6 e5 17.Be3 Qd7 18.f3 c6 19.h3 Rfe8 20.g4 c5 21.b4 Re7 22.Bf2 Qc6 23.Reb1 Rd8 24.Qa3 Qd7 25.Qc1 cxb4 26.Rxb4 Qe6 27.Rba4 Rdd7 28.Ra6 Rb7 29.Bh4 Rbc7 30.R1a2 Red7 31.Qa1 g5 32.Bf2 Qe7 33.e4 Nh7 34.h4 Nf8 35.hxg5 hxg5 36.Bg3 Ne6 37.R6a3 f6 38.Kg1 Qh7 39.Rh2 Qf7 40.Raa2 Qg6 41.Rh5 Rh7 42.Rxh7 Qxh7 43.Rh2 Qd7 44.Kg2 Qg7 45.Qb1 Rc8 46.Rh1 Qg6 47.Bf2 Rc7 48.Be3 Rh7 49.Rxh7 Qxh7 50.Qb5 Kf8 51.Qa6 Qd7 52.d4 Qc7 53.Kf1 Kf7 54.Ke2 Ke7 55.Kd3 Nf8 56.Qa1 Kf7 57.Qa4 Nd7 58.Qb3 Kf8 59.Qb5 Ke7 60.Bc1 Qb7 61.Ba3 a6 62.Qd5 Qxd5 63.exd5 exd4 64.cxd4 b5 65.c5 dxc5 66.dxc5 Ne5+ 67.Ke4 a5 68.Bb2 b4 69.Bxe5 1/2-1/2