Simplify the following text for a Grade 6 native English-speaking person.
Original: ( Persian for `` the king is helpless '' â `` see checkmate ) when the king was attacked and could not escape from attack ; these exclamations persisted in chess as it traveled to other lands thereafter .
Simplified: ( Persian for ` the king is finished ' ) when the king could not escape from attack . These exclamations persisted in chess as it traveled to other lands .