Chess Board
[ECO code B02]
ALEKHINE'S DEFENCE
Two Pawns Attack (aka. Lasker Var.)
White's QP advance supported both of his fifth-rank pawns and freed his QB, ready for a K-side attack.
Black's QKtPawn to QKt3(b6) challenges White's QBP and heralds a QB fianchetto against the centre.
    White  Black	White  Black
 1. P-K4   Kt-KB3    6.	P-Q4   P-QKt3
 2. P-K5   Kt-Q4
 3. P-QB4  Kt-Kt3
 4. P-B5   Kt-Q4!?
 5. B-B4   P-K3
Example ends: Undo or Jump or Clear