Static Rook

Static Rook (居飛車 ibisha) openings in shogi typically have the player's rook at its start position, which is the second file (2h) for Black and the eighth file (8b) for White.

Static Rook openings also include openings in which the rook has moved one or two squares to the player's left but still remains on the right side of the board.

Most Static Rook openings coincide with a castle development on the player's left side of board. In the adjacent diagram is an example of a castle built on the left side of the board paired with a Static Rook position. The castle is a Left Silver Crown Anaguma (with advanced edge pawn).

ii. Lx1e   P*1c

The Climbing Silver (棒銀 bōgin) attack involves advancing a silver upward along with an advanced or dropped pawn supported by the rook aiming to break through the opponent's camp on their bishop's side.

In the board diagram here, the Black's silver has successfully climbed to the e rank on the first file (1e).

A subsequent attack by Black, for example, could aim to sacrifice this silver in order to remove White's lance and then drop a Dangling Pawn within White's camp that threatens to promote.

Climbing Silver formations may be used with several different Static Rook openings such as Yagura, Double Wing, and Bishop Exchange.

Primitive Climbing Silver (原始棒銀 genshi bōgin) is a variant of Climbing Silver that attempts to use only a silver, rook, and pawn to attack. It is called primitive since such a simple strategy will not be successful if defended against properly.

Reclining Silver (腰掛け銀 koshikake gin) is a formation in which a player's right silver has advanced to the front of their camp on the middle 5th file and has an advanced pawn on the silver's right and pawn directly under the silver. The reclining name is meant to describe the way this silver rests on these two pawns as if it were seated on them.

In the board diagram, both Black and White have created Reclining Silver positions. Black has their silver on 5f (with pawns on 4f and 5g) while White has their silver on 5d (pawns on 5c, 6d).

Reclining Silver can often played as a component of different Static Rook openings such as Double Wing or Bishop Exchange. (However, it can also be played in Double Ranging Rook games.)

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Wikipedia