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Mikhail Botvinnik vs Francisco Jose Perez
European Team Championship (1961), Oberhausen FRG, rd 1, Jun-21
Formation: King's Indian Attack (A07)  ·  1-0

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)5...e6 was played in Yudasin vs Kasparov, 1976 (0-1)better is 6...e5 7.f4 h5 8.h3 Nge7 9.Nd2 Be6 10.Nf3 Qb6 11.Qc2 = -0.13 (22 ply)better is 7.d4 O-O 8.O-O Bd7 9.b3 Rc8 10.d5 Na5 11.Na3 b5 12.Nc2 ⩲ +0.54 (23 ply)better is 7...O-O 8.O-O e5 9.Na3 Rb8 10.Nc4 b5 11.Ne3 Bd7 12.Bd2 = 0.00 (20 ply) 8.h3 e5 9.O-O Qe7 10.Na3 Rb8 11.f5 h6 12.Nc4 gxf5 ⩲ +0.66 (19 ply)better is 8...O-O 9.O-O Qc8 10.a4 Bh3 11.Nf3 Rd8 12.Qc2 Rb8 = -0.33 (21 ply)= +0.37 (22 ply) after 9.Nf3 Qb6 10.Nh4 c4 11.h3 cxd3 12.Qxd3 O-O 13.b4 Qa6 better is 10.Nf3 a5 11.a4 O-O 12.Ng5 e5 13.Be3 Bh6 14.Rc1 Nh7 15.d4 = +0.44 (21 ply)better is 10...O-O 11.Ne3 Rd8 12.Bd2 e5 13.b4 cxb4 14.cxb4 Be6 = -0.11 (20 ply) ⩲ +0.59 (19 ply) 12.d4 bxc3 13.bxc3 O-O 14.dxc5 dxc5 15.e5 Nh7 16.Qd5 Rd8 ⩲ +0.69 (22 ply)better is 12...O-O 13.cxb4 Nxb4 14.a3 Nc6 15.Bd2 Be6 16.Bc3 Rb8 ⩱ -0.54 (20 ply)better is 13.cxb4 Nxb4 14.e5 dxe5 15.fxe5 Nh7 16.O-O O-O 17.Nf4 = +0.08 (22 ply) ⩱ -0.64 (19 ply) after 13...bxc3 14.bxc3 Be6 15.Nd2 O-O 16.Qc2 Rd8 17.Kf2 Rb6 better is 18...Ra6 19.Qc1 Bxa2 20.Qb2 Be6 21.d4 Rxa1 22.Qxa1 cxd4 ⩱ -0.72 (24 ply)= -0.13 (24 ply)better is 19...Rd8 20.Qc1 Ra6 21.Ng3 d5 22.Nb3 d4 23.cxd4 Nxd4 = -0.29 (21 ply)= +0.21 (21 ply)better is 20...Bxh3 21.Rag1 Nf6 22.f5 Bxf5 23.exf5 Ne5 24.Nf4 Qxf5 = +0.03 (22 ply) ⩲ +0.58 (21 ply)better is 21...Kh8 22.Bxh5 gxh5 23.Kg2 f5 24.Ng3 fxe4 25.dxe4 Bf7 = +0.30 (20 ply) ⩲ +1.01 (21 ply) 22...d5 23.exd5 Na5 24.Ne4 c4 25.d4 Nb7 26.N2g3 Bg4 ⩲ +0.51 (22 ply) 23.h5 Ng4+ 24.Kg3 Nxe3 25.Rxh3 e5 26.Qxe3 exf4+ 27.Nxf4 ⩲ +1.33 (22 ply) ⩱ -0.57 (24 ply)better is 24...Ne5 25.Nf4 Ra4 26.c4 Qxf5 27.Qg5 Nfg4+ 28.Bxg4 ⩱ -0.76 (20 ply)= -0.09 (21 ply) 26.h5 Ne5 27.h6 Nxf3 28.Kxf3 Nh7 29.Qg4 Bxc3 30.Nxc3 = -0.07 (21 ply) ⩱ -1.00 (23 ply) 28...Qd7 29.Rg1 Ra3 30.h5 Rxc3 31.h6 Nh7 32.hxg7 Nxg5 ⩱ -1.33 (25 ply)= -0.08 (25 ply) after 29.Qg3 Ra4 30.Kg1 Bh6 31.Bd1 Ra3 32.Nd5 Bxe3+ 33.Nxe3 30...Ne4 31.Nxe4 Qxe4 32.Qg3 Bh6 33.Ng2 Kg7 34.Bxh6+ = -0.12 (23 ply)better is 31.Bxh5 Qd7 32.Be2 Rb8 33.Rc2 Ra4 34.Rf1 Nh7 35.Qg3 Kh8 ⩲ +1.09 (22 ply)= +0.50 (24 ply) 33...Qg6+ 34.Qxg6 Nxg6 35.Bxc5 Rxc3 36.Rxc3 Bxc3 37.Rc1 ⩲ +0.71 (24 ply) ± +2.08 (26 ply) 34...Rd8 35.Kh1 Qg6 36.Qxg6 fxg6 37.Bxc5 Rxc3 38.Rxc3 ± +1.82 (25 ply)+- +3.04 (27 ply) 35...Qg6 36.Qxg6 fxg6 37.Bxd5+ Kh7 38.Kg2 Rf5 39.Rh1+ +- +2.70 (26 ply)+- +10.97 (29 ply); 36...Qe5 37.Rxg7+ Qxg7 38.Rg1 Qxg1+ 39.Kxg1 Ra6 40.Bxd5 +- +10.66 (26 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
Jul-01-09
Premium Chessgames Member
  IMlday: If I'd known this game existed then I would have put it in the 1983 "Big Clamp" booklet. 18..h4 is weak. Maybe Perez was freaked by 18.Kf2!? but blowing up his kingside can't be right. 18..Qc7 looks sensible.
May-21-16
Premium Chessgames Member
  keypusher: After 28....Qc6:


click for larger view

If 29.Bxa6, then 29....Nfg4+ 30.Kg3 Nxe3 and if 31.Be2, then 31...f6 and Black wins.

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