Rubinstein, Akiba VS Znosko Borovsky, Eugene 1909.02.15

Annotations

1. 12…c5 R - B sq should have been played instead. 13) Q - Kt 3 would then be met simply by Kt x Kt ch.
2. 13…bxc5 After 13) .... Kt (Q 2) x P, White continues 14) Kt x P, B x Kt; 15) B - Q B 4. In this variation Black must not be able to take the Bishop at Q 3 with a check, hence White's 12th move.
3. 21.Qe4 White calculates every possibility with the utmost accuracy.
4. 24.Rf4 If 24) .... R (Kt sq) x P, White wins by R - B 8 ch.

Emanuel Lasker, The International Chess Congress, St. Petersburg, 1909 (1910) · Public domain · source