For that reason another line of play has come to the fore in which White exchanges his inactive QB for Black’s troublesome KB.
3. Kt-QB3 Kt-KB3 4. B-Kt5 B-K2 5. P-K5 KKt-Q2 6. BxB QxB
Diag. 34
White has now the choice of two lines of development. He can either prepare for P-QB3 to support his QP. or he can develop his King’s side, holding the P at K5 only
I
7. Kt-Kt5 Kt-Kt3
8. P-QB3 P-QR3
9. Kt-QR3 P-QB4
10. P-KB4 Kt-B3
11. Kt-B2 Castles
12. Kt-B3 B-Q2
13. B-Q3 P-B4
The sacrifice BxPch, as mentioned above, was threatened.
14. Castles Kt-R5 15. R-Kt1 P-QKt4
If White does not wish to lose so many moves with his Kt, he can effect the intended protection of his QP as follows: