Sleeve Rook

Sleeve Rook (袖飛車 Sodebisha) is an opening in shogi in which the rook is moved to the third file from the right from the perspective of the player.

It is generally known as part of Static Rook opening category but can be used in Swinging Rook as well.

The inventor of this strategy is said to be Kinkichi Sakata (坂田三吉). The name comes from the fact that the rook moves to one square to the left from the main position - like a sleeve is next to an arm.