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Yuri Averbakh vs Tigran Petrosian
USSR Championship (1960), Leningrad URS, rd 16, Feb-20
King's Indian Defense: Fianchetto. Panno Variation Blockade Line (E63)  ·  1-0

8
7
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3
2
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1
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g
h
White to move.
ANALYSIS [x]
Notes by Stockfish 9 v010218 (minimum 6s/ply)11.b3 was played in Petrosian vs Spassky, 1966 (1-0)better is 13...Re8 14.Rad1 Qd7 15.Na4 Qc7 16.Bxf6 Bxf6 17.Ne4 Be5 = +0.13 (19 ply) ⩲ +0.87 (21 ply)better is 23.h3 g5 24.e3 Bf7 25.Re1 Re8 26.f4 gxf4 27.gxf4 Qd8 ⩲ +1.25 (21 ply) ⩲ +0.58 (24 ply)better is 28...Nxd5 29.Rxd5 Rb6 30.Qd3 bxc4 31.Qxc4 a5 32.Qf4 Rb4 ⩲ +0.52 (26 ply) ⩲ +1.05 (24 ply) after 29.cxb5 axb5 30.a4 Nxd5 31.Rxd5 bxa4 32.bxa4 Rbd8 33.a5 29...Rb6 30.Qe4 Qf5 31.Qxf5 Nxf5 32.Be6 Rd8 33.Kg2 Nh6 ⩲ +0.73 (25 ply) ± +1.63 (25 ply) 30...Rbd8 31.Bxa6 d5 32.Bb5 Rb7 33.a4 Qe6 34.Rc2 Rc8 ⩲ +1.43 (24 ply)+- +2.80 (27 ply) 31...d5 32.Bxd5 Nxd5 33.Rxd5 Rc7 34.Qe8 Rbb7 35.Rd8 Rf7 +- +2.71 (26 ply)+- +5.63 (29 ply)better is 34.exd5 Rbd6 35.Re1 Nf5 36.Rde2 Rd8 37.Re7+ Kh6 38.Qf7 +- +6.57 (27 ply)+- +2.85 (26 ply) 35...Rdb7 36.Rc1 Qd7 37.Qe3 Rd6 38.Rxc5 Rb5 39.a4 Rb7 ± +2.30 (23 ply)+- +4.30 (25 ply)better is 38.Qf8+ Kg5 39.Rf4 Rd8 40.Qxd8 Rxd8 41.Rxf3 Rd6 42.Rc3 +- +8.41 (26 ply) 38...Kg7 39.Rf4 Qh5 40.Re4 Qf5 41.Re7+ Kh6 42.Qf8+ Kh5 +- +4.04 (27 ply)+- +9.09 (22 ply)43...Kxg3 44.Rg5+ Kxh4 45.Qh6# +- mate-in-21-0

rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
FEN COPIED

Annotations by Stockfish (Computer).      [35437 more games annotated by Stockfish]

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Kibitzer's Corner
Apr-25-17  zydeco: This loss cost Petrosian dearly in his bid to repeat as Soviet champion. Petrosian was so lethal against the KID as white, so it's rare to see him play it from the other side (and, sure enough, he plays solidly and fails to generate dynamic counterplay).

Of course, if 43....gxf5 44.Qxf5+ Kh6 45.Qg5#.

Jul-21-24
Premium Chessgames Member
  WTHarvey: White mates in 4.


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42. ?

if 42...gxf5 43.♕xf5+

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