Chess Board
[ECO code A52]
BUDAPEST DEFENCE
to Smothered Mate (via Adler Var.)
White developed his queen's bishop to KB4(f4), the Rubinstein move doubling his K5P defence.
Black develops his King's Bishop to QKt5(b4) to check White's king, enable castling and also set up for a potential bishop sacrifice.
    White  Black	White  Black
 1. P-Q4   Kt-KB3    5.	B-B4   B-Kt5 ch
 2. P-QB4  P-K4
 3. PxP    Kt-Kt5
 4. Kt-KB3 Kt-QB3   Main 5W,4W route
WHITE to Continue or Undo or Jump or Clear