YOU SAID:
I will beat you at chess tomorrow dear
INTO JAPANESE
明日、チェスであなたを倒します
BACK INTO ENGLISH
I will beat you in chess tomorrow
INTO JAPANESE
明日はチェスであなたを倒します
BACK INTO ENGLISH
Tomorrow I will beat you with chess
INTO JAPANESE
明日はチェスであなたを倒します
BACK INTO ENGLISH
Tomorrow I will beat you with chess
That didn't even make that much sense in English.