白の手番
白の駒: Kg1 Rd1 Rd7 Bb2 Nf3 a4 b5 c2 e5 g2 h2
黒の駒: Kg8 Rc8 Rd8 Bd5 Na7 a5 b6 c7 e6 f7 g7 h6
Rook Battery (File)
Two rooks aligned on the same file, supporting each other to increase control and pressure along that file.
