Black developed his KKt to K2(e7) to improve his
QKt defence and to contest for his Q4(d5). White's light Bishop moves to QKt3(b3) to
take back control of Black's Q4(d5).
W-Alt.
White Black
1. P-K4 P-K4
2. Kt-KB3 Kt-QB3
3. B-Kt5 P-QR3
4. B-R4 KKt-K2
5. B-Kt3!