I don't just blurt it out, no. If the conversation NATURALLY turns to my hobbies and intersts then I decided based on the person's maturity level if I want to divulge that and other things about myself.
Girls in high school or college don't care at all for the most part. You look like a child or some under developed adult that seems "geeky" or "cute". Think Big Bang Theory, but if Penny actually treated those guys realistically.
Anyway, don't make chess your whole identity. That really would be sad and no girl or woman anywhere wants to be with a guy who already has a mistress.
- Don't worry, she made it, and eventually married a guy who the unfortunate fellow pictured below would laugh at. Poor guy never saw it comin', I bet... Just wedding bells followed by a shrill screech as a bi-polar succubus emerged from the bride's gown... and asked him to drive her to a doctor's appointment or, oh the horror, her parents' house!
Do you mention that you play chess to girls? I never used to until this one time I was at a party talking to this girl when another person came up and was like "Hey you're the chess guy!" (i'm president of a club) and the girl thought that was really cool and it started a great conversation afterwards.