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[Event "URS-ch19"]
[Site "Moscow"]
[Date "1951]
[White "Petrosian, Tigran V"]
[Black "Smyslov, Vassily"]
[Result "1-0"]
[ECO "D15"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "URS"]

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.Nc3 c6 5.e4

[5.a4]

5...b5 6.e5 Nd5 7.a4 e6

[7...Bf5 8.axb5 Nxc3 [8...Nb4 9.Bxc4 Nc2+ 10.Ke2 Nxa1 11.Qa4 cxb5 12.Bxb5+ Bd7 13.e6! fxe6 14.Ne5 +/-] 9.bxc3 cxb5 10.Ng5 e6 11.g4 Bg6 12.Bg2]

8.axb5 Nxc3 9.bxc3 cxb5 10.Ng5 Bb7 11.Qh5 g6!

[11...Qd7 Furman-Lilienthal, Baku (19th URS-ch, sf) 12.Nxh7 /\ 13.Nf6+]

12.Qg4

Be7 13.Be2

[13.h4 h5 14.Qg3 Na6 /\ Na6-c7-c5 [14...Nd7? 15.Nxe6!]]

13...Nd7 14.h4

[14.Bf3 Bxf3 15.Qxf3 O-O]

14...h5 15.Qg3 Nb6 16.O-O a5!

17.d5!! Nxd5

[17...Bxd5!? 18.Rd1 Qc7 19.Bf3 Initiative]

18.Rd1 Qc7 19.Ne4

O-O-O

[19...O-O?! 20.Bxh5]

20.Bg5! Bxg5 21.Qxg5

a4 22.Qg3 f5 23.Nd6+ Rxd6 24.exd6

f4?

[24...Qg7! 25.Bf3 Rd8 [25...Nxc3 26.d7+!]]

25.Qxg6 Qxd6 26.Bf3 Bc6 27.Re1 Re8

28.Bxd5 Qxd5

29.Rad1! Qf5 30.Qxf5 exf5 31.Rxe8+ Bxe8 32.f3 Kc7 33.Kf2 Kb6 34.Ke2 Ka5 35.Rb1 a3 36.Kd2 b4

[36...Ka4 37.Rb4+ Ka5 38.Kc2 /\ Kb1-a2, Rb1-e1]

37.cxb4+ Ka4 38.Kc3 a2 39.Ra1 Ka3

40.Kxc4! +- Kb2 41.Rd1 a1Q 42.Rxa1 Kxa1 43.b5 Bd7 44.b6 Bc8 45.Kd4 Kb2 46.Ke5 Kc3 47.Kxf4 Kd4 48.Kg5 Ke5 49.Kxh5 Kf6 50.g4 Bb7 51.Kh6 1-0