Simplify the following text for a Grade 4 native English-speaking person.
Original: He learned to play chess when he was 16 , and played with the strong master Gersz Salwe in Å Ã dÅ .
Simplified: He learned to play chess when he was 16 . He trained with and played against the strong master Gersz Salwe in Å Ã dÅ .