1. An intellectual game played by two parties with different pieces, on a board divided into sixty-four squares.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• creps,
• choos,
• chasy,
• choas,
• chasi,
• chassi,
• chirs,
• cheeds,
• chevys,
• cheif,
• chies,
• choeses,
• chechs,
• chriss,
• chelsy,
• chesse,
• chiers,
• chuse,
• cesse,
• chassy

• cheque,
• choke,
• cheers,
• choice,
• chews,
• chest,
• cheek,
• cheese,
• chigoe,
• chios,
• chaos,
• choosey,
• she's,
• choosy,
• Chace,
• chouse,
• choose,
• cheeks,
• chaise,
• chase,
• cheeky,
• chasse,
• Chieko,
• Chose,
• chiesa,
• Chas,
• chausse,
• cheesy.

The adjective form of the word "chess" is "chess-related" or "chesslike".

The plural form of the word "chess" is "chesses"

The singular form of the word "chess" is "chess". The word does not change in singular or plural form.