I just bumped GNU Chess to 6.1.0 in Gentoo (package games-board/gnuchess, optionally games-board/gnuchess-book). Since the change log advertised a new graphic mode using Unicode characters without showing pictures, here is something for you to see:
Graphic mode (guake, default font settings)
Graphic mode (guake, font “Monospace 32pt”, board only)
GNU Chess 6.1.0 introducing graphic (terminal) mode by Sebastian Pipping, unless otherwise expressly stated, is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.