[ECO code B03 / 04]
The Four Pawns Attack
White doubles his KP defence by advancing his KBPawn, adopting the Four Pawns Attack over Exchange or Alekhine Gambit lines. Black must play carefully to avoid being crushed. W-Alt.
White Black White Black 1. P-K4 Kt-KB3 5. P-B4 2. P-K5 Kt-Q4 3. P-QB4 Kt-Kt3 4. P-Q4 P-Q3
BLACK to or Undo or Jump or Clear