[ECO code C68]
The Alapin Variation
Black develops his Queen's Bishop to KKt5(g4), pinning White's KKt+Q so as delay piece exchanges and complicate the game for a better basis. B-Alt.
White Black 1. P-K4 P-K4 2. Kt-KB3 Kt-QB3 3. B-Kt5 P-QR3 4. BxKt!? QPxB 5. P-Q4 B-KKt5
Example ends: Undo or Jump or Clear