This game:
Botvinnik,Mikhail - Smyslov,Vassily [E68] World Championship 20th Moscow (14), 15.04.1954 [Kasparov]
"Vassely Smyslov, the great innovator with the black pieces, had less influence on the development of openings theory when he played with the white pieces. Smyslov was simply satisfied with a comfortable, free game. His favourite choices with White were quite significant: 1.d4 1...Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 0–0 5.Nc3 I guess Botvinnik was quite pleased that Smyslov didn't take the opportunity to switch to the Grunfeld with 4...d5. The King's Indian had never occurred before in Smyslov's games, while Botvinnik had great experience in this opening. 5...d6 6.Nf3 Nbd7 7.0–0 e5 8.e4 c6 9.Be3 It is important to note that Botvinnik's last move was a novelty, at least for official openings theory. However, in his deep preparation of unusual openings (for his style at least) Smyslov predicted such a turn of events. With his counter he eventually put White's idea out of business! Today the best options are 9.h3 or 9.b3. [After the match in 1954 the King's Indian had practically vanished from Smyslov's playing repertoire. But in 1980, playing Bukal, he showed how profound his preparations for the first match with Botvinnik had been: 9.h3 Qb6 10.Re1 exd4 11.Nxd4 Ne8! For years the world's best experts had been playing automatically 11...Re8 and experiencing certain difficulties in this opening. Smyslov's invention in 1954 (!) dramatically changed the character of the position.Wherever the white knight on d4 goes Black is able to develop effective counterplay. That is why white players today predominantly prefer 10.c5 – even Karpov has finally switched to this very sharp line. What could be a higher appreciation of Smyslov's knight retreat to e8 in the King's Indian.] 9...Ng4! 10.Bg5 Qb6 11.h3 exd4! 12.Na4 Qa6 13.hxg4 b5 Now the temporarily sacrificed piece will be returned, after which the multiple pawn weaknesses on both sides make the position dynamically equal. 14.Nxd4 [Many years later, in 1992, Yussupov tried an improvement against me in the Linares tournament: 14.Be7 Re8 15.Bxd6 bxa4 16.e5 Nevertheless after Aber nach 16...c5! Black holds the balance, e.g. kann Schwarz das Gleichgewicht halten, z.B. 17.Nxd4 (Yusupov's attempt to complicate the situation further with 17.b4!? cxb4 18.Qxd4 Bb7 led to a murky position that eventually backfired. He underestimated Black's potential and eventually lost the game.) 17...Bb7 18.Nb5 Bxg2 19.Kxg2 Bxe5] 14...bxa4 15.Nxc6 White takes up the challenge. [15.b3 was also playable: 15...Ne5 16.Be7 Bxg4 17.f3 Rfe8 18.Bxd6 Rad8 19.c5 Bc8 is unclear(19...Nd3 20.Nxc6!) ] 15...Qxc6 16.e5 Qxc4 17.Bxa8 Nxe5 In return for the exchange Black has excellent compensation. The white pawns are vulnerable, his pieces disorientated, his king's position weakened. 18.Rc1 [In case of 18.Qxd6 Bxg4 (18...Qxg4?! 19.Bf6!) 19.Bd5 Qd3 Black shouldn't worry too much.] 18...Qb4?! [18...Qb5! is far more unpleasant for White.] 19.a3 Botvinnik is missing an opportunity to push his opponent to the edge. [The tempting 19.Be7 Bxg4 20.Bxd6! would have left Black with a narrow path to avoid slightly worse, dull endgames. 20...Qb6 21.Qd5 Bf3! (21...Rd8 22.Bc7 Rxd5 23.Bxb6 Rd2 24.Bxa7 Rxb2 25.a3) 22.Qc5 Rxa8 23.Bxe5 Qe6! 24.Qe3 (24.Bxg7?? Qh3 mating.; 24.Rc3 Bb7 25.Re3 Qh3 26.f3 is not clear, but roughly equal.) ] 19...Qxb2 20.Qxa4 Bb7! Now White's king safety is becoming a serious issue. 21.Rb1? The result of an obvious miscalculation [21.Bxb7 Qxb7 22.Rc3 h6 (22...Nf3+ 23.Rxf3 Qxf3 24.Be7) 23.Bf4 Nf3+ 24.Rxf3 Qxf3 25.Bxd6 Rd8 26.Bc5 would have settled the game peacefully.] 21...Nf3+ 22.Kh1 Bxa8! 23.Rxb2 Nxg5+ 24.Kh2 Nf3+ 25.Kh3 Bxb2 Black has got quite enough in return for one queen. His four pieces get together quickly and organize the final attack on the defenceless white king. 26.Qxa7 Be4 27.a4 Kg7 28.Rd1 Be5 29.Qe7 Rc8 The rook is preparing to deliver the mortal blow. 30.a5 Rc2 31.Kg2 Nd4+ 32.Kf1 Bf3 33.Rb1 Nc6 and White resigned.[33...Nc6 34.Qc7 Bd4 35.Qxd6 Rxf2+ 36.Ke1 Re2+ 37.Kf1 Rh2 requires no comment.] 0–1"
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