
Let me explain:
- Leela Chess Zero (Lc0) is a console (Command Line Interface - CLI) chess engine. It runs without any graphics. If you are not a chess developer you should not play directly with it since command lines for it (a UCI protocol engine) are usually very long (and boring). Instead, a normal user should use a chess GUI to play with it.
As I said in an above post, you should run Lc0 directly for the first time only right after downloading, mainly to give it and its libraries permissions to run (to run, go to lc0 folder and click on file "lc0")
- Banksia (download from github.com) is a console app too. The purpose of that app is to help users make tournaments between chess engines but not human players. Don't use that app if you want to play vs Lc0 as a human
- Banksia GUI (Banksia + Graphical User Interface) is a chess GUI. It is what you need to vs Lc0.
Steps:
1) Download and run BanksiaGUI
- Download BanksiaGUI (temporary download page: https://banksiagui.com/preview-versions/)
- From Finder, go to download folder, click on the download zip file to unzip it. You will see the file "BanksiaGui.app"
- Control-click (click when holding Control key) to that app to popup a dialog -> click button Open to allow the app running
You should see the bellow screen of Banksia GUI:

2) Integrate Lc0 to BankisiaGUI
- open menu File->Preferences to open Settings Dialog->Engines tab
- Click + button (button with image of plus) and follow its instruction to add Lc0
3) Create a game to vs Lc0
- open menu File -> Game setup. Select the first box as Human and Lc0 for the second one -> OK
Now you can play white side vs Lc0 black side
Hope it helps
