Doubling Rooks & the Heavy Battery: a middlegame course

Two rooks can support each other on a file or rank. Calculate the exchanges before breaking through.

5 lessons, each followed by its own puzzle drill, then 10 themed puzzle packs.

• Double the Rooks — Use a second rook to support the target square.
• Add the Queen — Add the queen when another attacker helps the exchange.
• Overload the Defence — Attack a defender with more than one responsibility.
• Break Through — Calculate the captures before invading.
• Convert — Coordinate the rooks to restrict the king and deliver mate.