Fortress vs Right Fourth File Rook (矢倉対右四間飛車) is a
Double Static Rook
Double Static Rook (相居飛車 ''ai-ibisha'') positions are shogi openings in which both players use a Static Rook position.
Relation to castles
Most Static Rook openings coincide with a castle development on the player's left side of board. ...
opening in which one player chooses a
Fortress
A fortification is a military construction or building designed for the defense of territories in warfare, and is also used to establish rule in a region during peacetime. The term is derived from Latin ''fortis'' ("strong") and ''facere'' ...
position and their opponent uses a
Right Fourth File Rook
In shogi, Right Fourth File Rook (右四間飛車 ''migi shikenbisha'') is a Static Rook opening in which the rook is positioned on the fourth file if played by Black or the sixth file if played by White.
Typically, Right Fourth File Rook devel ...
position.
Development
Another Double Static Rook game includes playing Right Fourth File Rook against a Fortress position.
If White is going to attempt Right Fourth File Rook, then after Black advances their central pawn on the fifth move, White should push their rook pawn to the central file forcing White to protect the second with their silver.
After this, White starts developing the Right Fourth File Rook structure by advancing their sixth file pawn (that is, their pawn that is the fourth file from the right side of their board). White aims to move their right silver to the central file through the sixth file and their rook to the sixth file while Black continues building their Fortress position.
References
Bibliography
*
External links
* Shogi Maze
Yagura: Migi Shikenbisha Strategy* Yet Another Shogi Site
Yagura Rapid Attack: Right hand fourth file rook
{{Shogi openings
Shogi openings
Static Rook openings
Fortress openings