A kind of tactics of shogi, is an app that summarizes the opening book of the corner exchange pretend rook.

The main focus of this application, are some of the opening book of the corner exchange Shiken rook and the direct opposite rook.
Traditionally, the corner exchange for which has been considered to be detrimental to pretend rook side, shake the rook from stopping the corner road was the general.
But In recent years, been discovered that it is possible to attack aggressively from pretend rook side by rather exchange the corner, is a tactic that has been adopted in a number of professional go player.

We were allowed to book the following in reference for each procedure.
· Keita Kadokura 4-dan al., "Corner exchange Shiken rook thorough guide"
- North Island Tadao seven-stage al., "Phase badger state-of-the-art '
Oishi Choku嗣 6th dan al., "Direct facing rook thorough guide"

This app is can also be used offline.