For those interested in big board variants, Chu Shogi is now

For those interested in big board variants, Chu Shogi is now playable on lishogi.org : r/chessvariants

Abstract Strategy Games: The Definitive Guide

Chushogi

Shogi Variants

Chu Shogi (中将棋) Europe, Thank you for accepting me to this group

Tai shogi - Wikiwand

Chu Shogi Dr Eric Silverman

Shogi and Shogi variants

Chu Shogi (中将棋) Europe

Some Traditional Enlarged Forms of Chess

Simple Wooden Shogi Set by Philos : : Toys & Games

A quick survey about Shogi : r/chessvariants

Capablanca Chess: Most Up-to-Date Encyclopedia, News & Reviews

Chu Shogi Dr Eric Silverman

An Interview with the President of Japan Chu Shogi (mid-sized Shogi) Association