Subway Rook (nyanko)

Subway rook, shown in figure. 1, is strategy for attacking edge intensively by Pawn, Lance, Knight, Bishop, Rook.
This is relatively minor, but effective against Mino or Anaguma castle.

figure. 1

The name "subway" derives from the move of Rook from 2i to 9i is just like a railway in underground.

The moving sequence for piece building of Subway Rook is shown below, which is my actual game below. Halfway figures to figure. 1 is also shown.

In this game, the Subway Rook worked well and the opponent became less able to defend against my burst through of edge because my Rook and Bishop reached 9c. Therefore he resigned in Middlegame.