Schlechter, Carl VS Bernstein, Ossip Samuel 1909.03.01

Annotations

1. 4.Bc4 Compare the game Schlechter v. Mieses.
2. 14.Bxe6 The sacrifice yields three Pawns for the piece, and, moreover, attack against the King, which remains exposed in the centre.
3. 18.Nf5 Surely the exchange of the Black Q B could not be of any importance, nor could White have the intention of liberating Black's King from the heavy pressure for the sake of winning his K Kt P, which could not escape in any case. Hence it was natural and indicated to continue with 18) K R - K sq.
4. 25…Rhg8 On one side Black attacks the King, on the other the Pawns, while White's Pawns are unable to exert any counter pressure. Hence White is lost, though having three Pawns for the piece, as Black's King deprives the White pieces of their mobility whereas the White King is a mark for attack. The case would be different if no Rooks were on the board.

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