5…exf6Black intends to turn his King's side Pawns to account, but it seems easier for White to operate with the Queen's side Pawns. Otherwise matters are about even. The opening does not, therefore, recommend itself for Black.
10.Bf1At Kt 3 this Bishop would impede the K B P. But White has no interest in the attack on this Pawn nor in preventing Black's B - K 3.
13…h6By this move he guards K Kt 4, and prepares P - K B 4, B - B 3, P - K Kt 5, as soon as circumstances appear favorable for such an attack. Altogether he is well developed, and waits for the dispositions of his opponent.
19.Ne5This move shows up the weakness of Black's strategy. White uselessly wastes all his Powder on Q 4 and his Pieces are awkwardly crowded. The B at K 3 and the Kt at K 2 are exposed on the K file, only to support the K B P, which can be attacked by B - Q 3. If Black play P - K Kt 3, White moves P - Q 5, and after the exchange of Bishops Black would have nothing left to oppose on the Black diagonal.
22…Ne722) .... P - B 5 would not do on account of R x B; he intends to play now P - B 5 and B - B 4.
24.Rxg7+The undisputed command of the two diagonals Q R sq to K R 8, and Q B 2 - K R 7, and the exposed position of Black's King, are more than sufficient compensation for the loss of the exchange.
25…f6If 25) .... K - B sq; 26) Q - R 7; and if 25) .... K - Kt sq; 26) Q - B 3.
39…Qd1+Black has no opportunity of concentrating pressure on his opponent, while White is making his final preparations at leisure. Here Black perceives the chance of retrieving his fortunes by a desperate attack.
42.Qg3“Fortes fortuna adjuvat.” White succeeds in shaking off even this surprising charge.
Emanuel Lasker, The International Chess Congress, St. Petersburg, 1909 (1910) · Public domain · source