Chess is a two-player strategy board game that has been around for centuries. The pieces used in the game are KNIGHTS, PAWNS, MEN, ROOKS, and kings. KNIGHTS are represented by the letter 'K' and have seven letters. PAWNS are represented by the letter 'P' and have five letters. MEN are represented by the letter 'M' and have three letters. ROOKS are represented by the letter 'R' and have five letters. Kings are represented by the letter 'K' and have five letters.