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Wolfgang Pietzsch vs Tigran Petrosian
Nimzowitsch Memorial, Copenhagen (1960), Copenhagen DEN, rd 2, Aug-08
Benoni Defense: Modern Variation (A56)  ·  0-1

8
7
6
5
4
3
2
a
1
b
c
d
e
f
g
h
White to move.
ANALYSIS [x]
Notes by Stockfish 9 v010218 (minimum 6s/ply)better is 7.Bd3 h6 8.Bd2 O-O 9.Nf3 exd5 10.cxd5 Bg4 11.h3 Bxf3 ⩲ +0.63 (22 ply)= 0.00 (26 ply) 8.Nf3 Qb6 9.Rb1 O-O 10.Be2 Nc6 11.O-O Nd4 12.Nxd4 cxd4 = +0.33 (23 ply)better is 8...Nc6 9.Nf3 h6 10.Bh4 Qa5 11.Qd2 O-O 12.Bd3 Qb4 13.a3 ⩱ -0.53 (21 ply)= +0.04 (21 ply)better is 9...Nc6 10.Bd3 O-O-O 11.Nf3 h6 12.Bh4 Qb4 13.a3 Qb3 = -0.18 (23 ply)better is 10.Bd3 h6 11.Bh4 Nc6 12.Nge2 Rae8 13.O-O Qd8 14.f5 Bd7 = +0.44 (22 ply)= -0.13 (21 ply) after 10...Qa6 11.Rd1 Nc6 12.b3 Rae8 13.Be2 Bg4 14.Bxf6 Bxf6 better is 15...Nd7 16.f5 Ne5 17.Bc2 f6 18.Be3 Bf7 19.Qd1 Nxc4 ⩱ -0.52 (25 ply) 16.Nxb3 Qxb3 17.Bb1 Qxc4 18.f5 Ng4 19.Kh1 Qd4 20.h3 Nf2+ = 0.00 (25 ply) ⩱ -1.42 (24 ply)better is 20...h6 21.Bh4 g5 22.Bg3 Rd8 23.Bf2 Ng4 24.Bg1 Bd4 25.Nf3 ⩱ -1.44 (23 ply) ⩱ -0.72 (25 ply)better is 22...Re7 23.Bxf6 Bxf6 24.Ne4 Rxe4 25.Bxe4 Qb6 26.Rf2 Bd4 ⩱ -0.68 (23 ply)better is 23.Ne4 f6 24.Bd2 g5 25.Re1 Ne5 26.Be2 Re7 27.Bc3 Qd7 = -0.16 (24 ply) ⩱ -0.77 (27 ply) 24.Qc3 Re5 25.Nf3 Rxg5 26.Nxg5 Nxf6 27.Rxf6 Re8 28.Ne4 ⩱ -0.54 (28 ply) ∓ -1.52 (29 ply)27.Bxf6 Nxf6 28.Bf3 Nd7 29.g3 Re8 30.Kg2 Qe7 31.Qf4 f5 ⩱ -1.33 (24 ply)0-1

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

Annotations by Stockfish (Computer).      [35435 more games annotated by Stockfish]

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Kibitzer's Corner
Dec-21-10  Sem: OK, White is a pawn down against the great Petrosian, but is he hopelessly lost after BxB, NxB, Bd3>?
Dec-21-10
Premium Chessgames Member
  Sastre: 27.Bxf6 Nxf6 28.Bd3 would lose a pawn to 28...Nxd5 29.g3 (29.cxd5 Qxh4+ 30.Kg1 Qd4+ 31.Rf2 Qxd3) Nb6.

Therefore White could have played 27.Bxf6 Nxf6 28.Bf3 if he wanted to continue.

Dec-21-10  shalgo: <Therefore White could have played 27.Bxf6 Nxf6 28.Bf3 if he wanted to continue.>

That position is still pretty grim for White. Besides being down a pawn, he is going to have a bad bishop versus a great knight after Black plays Nd7-e5

Dec-21-10
Premium Chessgames Member
  beatgiant: How about 27. Bxf6 Nxf6 28. Bf3 <Nh5>, and I don't see how White can avoid losing a second pawn?
Dec-21-10
Premium Chessgames Member
  Sastre: <beatgiant: How about 27. Bxf6 Nxf6 28. Bf3 <Nh5>> 29.Qe1 Re8 30.Qf2 protects the pawn.
Dec-21-10  arnaud1959: Note that white gets nothing from pinning the Knight after 27.Rxf6 Nxf6. Black doesn't even need to double protect the knight by Kg7. The 3 possible Queen moves to attack Nf6 fail all to a counter attack against the white Queen. 28.Qf1 or Qc3 fail to 28.-Nxe4 and 28.Qf4 fails to Nh5

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