[ECO code B25]
The Botvinnik Variation
Black advances his King's Pawn to K4(e5) to strengthen his Q5(d4), for ..KKt-K2, ..0-0, ..P-KB4 - Botvinnik's effective line for a reasonable game.
White Black White Black 1. P-K4 P-QB4 6. KKt-K2 P-K4! 2. Kt-QB3 Kt-QB3 3. P-KKt3 P-KKt3 4. B-Kt2 B-Kt2 5. P-Q3 P-Q3
Example ends: Undo or Jump or Clear