The correct move is here 8. Castles. If Black wins the pawn by BxKt; 9. PxB, QPxP; 10. BxP, QxBP, White obtains a strong attack, e.g., 11. R-B1, Q-R4; 12. BxKt, PxB (KtxB; 13. PxP); 13. P-Q5, with this possible continuation l3. … Kt-Kt3, 14. PxP, PxP; 15. Q-Q6, with a strong attack.
6. P-K3 Castles 7. Q-B2 P-B4
White intends to castle on the Queen’s side, and to follow this up with a storm by the King’s side pawns. Although Rubinstein has on many occasions been successful with this form of attack, it is open to criticism. For, where Kings have castled on different wings, the attack on the King which has castled on the Q side should be more successful.
Diag. 153
This is much stronger than P-Q Kt3 and B-Kt2, as then the Black Queen cannot participate in the attack quickly enough. As pointed out before, speed is the first consideration for the attack, whenever the Kings have castled on different wings. An interesting counterpart to the present game is found in a game won by Rubinstein from Teichmann (Match, Vienna, 1908) 7. … P- QKt3; 8. PxP, PxP; 9. B-Q3, B-Kt2; 10. Castles QR, P-B4; 11. P- KR4, P-B5? (the only hope lay in the opening of the QB file); 12. B-B5, R-K1; 13. BxKKt, KtxB; 14. P-KKt4, B-Q3; 15. P-Kt5, Kt- K5; 16. P-R5, Q-K2; 17. QR-Kt1, P-QR3; 18. BxPch!, KxB; 19. P- Kt6ch, K-Kt1; 20. KtxKt, PxKt; 21. P-R6, P-B31 22. PxP, PxKt; 23 R-R8ch, KxP; 24. R-R7ch, and Black resigned a few moves later.
8. Castles Q-R4 9. PxQP
White loses time in the centre. It was imperative to proceed at once with P-KKt4 followed by BxKt, P-Kt5 and P-KR4.
9. … KPxP 10. PxP KtxP 11. Kt-Q4 B-K3 12. K-Kt1
It would be too risky to leave both King and Queen on the QB file.