Chess no longer appears in the list of games

[UnbeatableLover]

Hey, I had unlocked the Chess minigame to play with Monika, the problem is that from one moment to another it stopped appearing and I don't know what to do. I thought about using Cheat Engine to manipulate the game and access it, but I don't know if it's possible to do that
Just in case, I didn't use any submod or any translation