YOU SAID:

Yeah, I play chess, how could you tell?

INTO JAPANESE

ええ、私はチェスをします、どうやってわかりますか？

BACK INTO ENGLISH

Yeah, I play chess, how do you know?

INTO JAPANESE

ええ、私はチェスをします、どうやって知っていますか？

BACK INTO ENGLISH

Yeah, I play chess, how do you know?