The Open f-File Attack: chess middlegame concept

Double the rooks and crash through

Open bishop-file pointed at a castled king is free attacking play. Stack the rooks, queen behind, knight in range.

• Open bishop-file plus castled king: free attacking chances.
• Double the rooks on the file first, then look for the break.
• The target is the square the king alone defends.
• King's Gambit, Vienna, Bird's, and most Sicilians serve these up.