| 18. ........ | Kt - Q 5 | |
| 19. Q - Q 1 | P - Q B 4 |
In order to prevent R × Kt giving back the exchange, but winning a Pawn and relieving the position.
| 20. P - Q Kt 3 | R - Kt 1 |
In order to play B - Kt 2 without blocking his Rook.
Black's manœuvring for positional advantage is admirable throughout this game, and if he loses it is due entirely to the fact that the sacrifice of the exchange, without even a Pawn for it, could not succeed against sound defensive play.
| 21. Kt - B 3 | P - B 4 | |
| 22. P × P | P × P |
The position begins to look really dangerous for White. In reality Black's attack is reaching its maximum force. Very soon it will reach the apex, and then