Karpova: This game was played in the German Chess Club Vienna. Grünfeld annotated the game (I only give some excerpts).On 1...d5, Grünfeld notes that recently <1...Nf6> became more popular. Both, Bogoljubov's <2.Nf3 e6 3.c4 Bb4+> and Grünfeld's <2...g6>, are sufficient for Black to equalize. He refers to his article "Das Pistyaner Turnier in seiner Bedeutung für die Eröffnungslehre" (Arbeiter-Schachzeitung, number 9/10).
3...Nf6: Tarrasch's <3...c5> has vanished from tournament play completely, since White has several good ways of handling it. The best one is the variation introduced by Schlechter and elaborated (<ausgearbeitet>) by Rubinstein - <4.cxd5 exd5 5.Nf3 Nc6 6.g3! Nf6 7.Bg2 Be6 8.0-0 Be7 9.dxc5 Bxc5 10.Na4! Be7 11.Be3! b6 12.Nd4> (Reti vs Tarrasch, 1922).
Grünfeld considers 5.Nf3 to be slightly better than <5.e3> (<5.Nf3 dxc4 6.e4!>).
According to Grünfeld, 6...h6 was only played to avoid theory. It's usually not advisable to drive the ♗ to h4 in the Orthodox Defense, since White can avoid the trade against the ♗e7 later (<...dxc4 Bxc4 ...Nd5 Bg3>).
9...Be6: <9...Bb7> is in accordance with the position, but White plays <.Ne5> and <.f4> and gets an attacking position, against which no antidote has been found yet.
13.Ba6<!>
With 14...Bh4, Tartakower was already planning the exchange sacrifice, since he felt he had been outplayed. The sacrifice is not sound, though. Grünfeld gives <14...Bb4! 15.Bb7 Bxc3+ 16.bxc3 Qe7 17.0-0 Rad8 18.Ba6 Nf6> instead.
16.Bxa8<!> (<16.hxg3 Rb8 17.Bxd5 Bxd5 18.Nxd5 Re8+ 19.Ne3 Nf6 20.0-0 Re4> and the d-♙ becomes too weak, according to Grünfeld).
Grünfeld gives <22.Qd3! Bf5 (or 22...f5 or 22...Nxc3 23.Qxg6) 23.Rhf1 Qd6+ 24.Kg1> as much clearer for Wite.
Grünfeld suggests <27.h4>.
According to Grünfeld, weaker than 27...f4 was <27...Qxe5+ 28.dxe5 e3 29.Rfd1> and the White ♖s invade the Black position (and White has a passed ♙).
30.Rc6<?> Grünfeld gives <30.Rc7> (sample line <30.Rc7 Rf7 31.Rc6 Re7 32.d5 Bxd5 33.Rxh6 Kg7 34.Rd6 Bb7 35.a4>. Now the Black ♔ can advance and support the passed ♙s.
33...e3<!>
36.Rd7 threatens to win the ♗ (<37.Re7+ Kf5 38.Re5+>), but I wonder if 36...Rf7 was not a better way to meet the threat, than 36...Re8.
On 37.Rg7, Grünfeld notes that also <37.Kg1> would be insufficient to save the game (<37.Kg1 Be6! 38.Rg7 e2 39.Re1 Ke3 40.Rg5 Bxh3! 41.gxh3 f3>).
39.Bxg2<!>
Source: 'Österreichische Schachrundschau', July 1922, issue 5, pp. 34-36
Kibitzing
sac: 15...Bxg3
- Tartakower
