Full playthrough here: https://youtu.be/TIeJ9t35GnQ
First off do not hit the escape key in the items menu to try to exit it quickly it'll remove the items menu and you will be stuck I don't believe there's anything you can do after hitting exit in the items menu but opening and reloading ALSO this game DOES NOT have Auto Save so save your game I glitched the game and lost everything.
Honestly this is probably the best instructional anything I've ever seen for Go I remember trying to pick it up on yahoo games after watching Hikaru no Go in my youth, but I was just getting spanked. The game does a great job of breaking up techniques and things into sections and explaining, but I must admit when making it to the end game there's still just so much information that I still suck at Go. I think with some time and actually playing through all the missions I may get it eventually, but god Go is just hard imo I do love the art so far and I love how they make the scenarios into little battles

Critical bug: black screen in monster`s nest.