How to fulfilling the logic and grandmaster Chess class level

[MADWACZ]

So I`m playing Sims 3 again on Origin and bought some expansion packs as well but one thing I have complete amnesic about is to level up chess levels, I have masted logic on two Sims this round bit so I must have overseen something.

[HiFive]

You have to win some chess matches with other Sims. Usually, you go to a park or town center that has chess tables and compete there. Sometimes, the game will alert you that there is a chess match taking place, and you can go there. Other times, when your Sim is starting a game with another Sim, you will get an option to make it a chess match. This even happened once when my Sim was playing a game at home with a housemate. It helps if there are other Sims watching the match, if I recall correctly. Or maybe it even helps if other Sims are just watching a regular game.

[HUN whoami #savetf2]

You can also ask out a Sim with Chess knowledge directly on a Chess match, if they are on level 2 or 3 atleast I think.

I have to clarify though

[U DON'T NEED TO KNOW MY NAME]

Do learn science potion making as well the mood enhancing potions r fun asf

[Kvinden]

An easy way is to go to a vacation world. It is better if you have a house there but any lot with a chessboard will do.
Because you can get the title in one day in your homeworld timescale when it would take sims weeks or months. No one works in the vacation world so they are always available, unlike in the homeworld where they have a schedule ( and your sim too)

It is very similar to the simfu championship. In china You do one fight/day but when you return to Sunset valley (or whatever world you play) only one sim hour has passed and your sim can complete it's lifetime wish in one day.

To raise the chess hidden skill you simply play chess. Play against someone or training alone works the same. But do not let the sim play chess on a computer, it doesn't raise the skill.
It takes only around 20 sims hours to increase it from 0 to 10 but except the last matchs you win easily with 6 or 7 points in the skill.