White's Bishop under threat on QB4(c4) retreats
to QKt3(b3), keeping pressure on Black's KB2(f7). Black develops his Queen's Knight to
QB3(c6) to defend his threatened KP for a good
game.
White Black
1. P-K4 P-K4
2. B-B4 Kt-KB3
3. P-B4 KtxP
4. P-Q3 Kt-Q3
5. B-Kt3 Kt-B3