Life In 19x19

you don't have to struggle with jar stuff.
here is the windows execuable "mylizzie.exe," you may install just like any 64 bit windows program and ready to run.

https://www.goandai.com/download-mylizzie/

its core is lizzie.
BTW, let me know if you have any problem w.r.t. download, install (actually just unzip, or unrar,) and settings. i would be able to offer my experience.

I use mylizzie to beat KGS's petgo repeatly, which is an 8 dan, and i was ranked 8 dan,
using mylizze to face your opponent, you may easily recognize your opponent an AI go or a real human: by setting game as 1 minutes, 20 seconds x 3 ; or 1 minutes, 15 seconds x 3.
human instinct vs. AI instinct within 15 seconds, human will loss.
moreover, setting a game by 1 minute, 15 seconds x 1.