What is “xboard” Package?

Graphical user interface for chess
For more details: https://www.gnu.org/software/xboard/

Installation

• Open Terminal by pressing command+space then type terminal and hit Enter key.
• Install homebrew first.

  ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" < /dev/null 2> /dev/null

• Install xboard.

  brew install xboard

Now, use xboard!