I'm doing this study to learn myself about 3rd file rook and its variations. I'll try to compilate as much as I can in the subject while I study.
I'm following Hidetchi's videos on Ishida's Quick Attack, Shogi Fundamentals Vol1: Shogi Openings on Ishida Style, and this page (https://shogi-joutatsu.com/archives/category/sempou/sankenbisha) on other forms.
Remember to be critical. As I can miss things, forget to correct something or not have analysed a move fully yet.
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