The location card for "Historical Society" has the next text:
Pass a Luck(-1) [2] check to gain ....
what means --> [2] ?

Already thx for the answer.

Means you need 2 successes to pass the check. So at least 3 Luck or Clues. Pages 12 and 13 in the rules.

Thx, I just read it. It's still a lot to remember all those rules and also in another language .

Dam said:

Actually, a Skill(-1)[2] check would require at least a score of 3 (so that 3-1= 2 dice rolled), or TWO Clue Tokens (since clues do not suffer penalties- should you be asked to roll a Luck(-999) check, you could still spend 1 clue to roll 1 die.)

Gott said:

3 Luck isn't a score of 3? Clues, as in multiple, doesn't include 2 or more ?

Gameboy said:

Thx, I just read it. It's still a lot to remember all those rules and also in another language .

Hang in there. Look at it this way: you already know what "Luck (-1) Check" means, and that's half the game right there.

Welcome to the Carnival, Gameboy!

I guess the other half the game is: "will I get an extra OW encounter if a gate opens on me in the Arkham Encounters phase?"

To which the answer is, "yes."