It would be great if the author kept up with this for 50 more chapters and then finished the whole thing with them bowing, saying goodbye and going separate ways.
I'd love it if they go beyond that.
43 chapters of no progress is expected but baiting is a bad way to handle things imo.
Still better than introducing a character just for drama I guess.
Memorizing a shogi board and being able to play through different moves in your head feels pretty impressive to me, but then again, I've never played shogi.