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Lajos Portisch vs Jan Hein Donner
Second Piatigorsky Cup (1966), Santa Monica, CA USA, rd 16, Aug-11
English Opening: Symmetrical. Anti-Benoni Variation Spielmann Defense (A33)  ·  1-0

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1
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White to move.
ANALYSIS [x]
Notes by Stockfish 9 v010218 (minimum 6s/ply)8...Qe7 was played in Kramnik vs Kamsky, 1994 (0-1) 10...Bxc3 11.bxc3 Bg4 12.Nxc6 bxc6 13.c4 Qe7 14.Qc2 Rfd8 = +0.08 (25 ply)better is 11.Qb3 Bxc3 12.Qxc3 Bd7 13.Rfe1 Qe7 14.Rac1 Rac8 15.Qd3 ⩲ +0.88 (25 ply)= +0.25 (23 ply) 16.Re3 Ba6 17.Qa4 h6 18.Ree1 Re6 19.h4 Qd6 20.Qa5 Rae8 ⩲ +0.63 (21 ply) 16...Bc4 17.Qxb7 Nd6 18.Qc6 Nb5 19.Qxa8 Qxa8 20.R7xc4 ⩱ -1.23 (28 ply)= +0.46 (20 ply) after 17.Qa4 Re7 18.Rxe7 Qxe7 19.Qa5 Qd7 20.b3 h6 21.h4 Qd6 18...g6 19.Qd7 Qxd7 20.Rxd7 Be2 21.Rxb7 a5 22.Rb3 Rac8 = +0.44 (25 ply)+- +3.11 (25 ply) after 19.Rd7 g6 20.Qf4 Qxd7 21.Qf6 Nf3+ 22.Bxf3 Kf8 23.h3 h5 ; 19...h6 20.Rd7 Qc8 21.h4 Bd3 22.Rxc8 Bxf5 23.Rxa8 Rxa8 +- +3.03 (29 ply)1-0

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
Mar-25-06  Tobias: A possible follow up: 1...g6 2.Qf4 Ba6 3.Rbc7 Re4 4.Qf6 Rxd4 5.Qxd4 Ne6 6.Qe5 Nxc7 7.Rxc7 Bc4 8.b3 f6 9.Qe6+ Kh8
Jan-09-15  zydeco: Portisch says that 16.Rc7 was actually a mistake and black could have won the exchange with 16....Bc4 17.Qxb7 Nd6 18.Qc6 Nb5.
Feb-06-16
Premium Chessgames Member
  dernier loup de T: After 19...g6 20.Qf4 Ba6, 21. Rd7!! (deflection!) Qxd7 22. Qf6 gives a brilliant conclusion to the game...

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