Sega Chess (also known as Master Chess^[4]) is a 1991 chess video game developed by Probe Software and published by Sega for the Master System.

The game can be viewed from overhead or in a pseudo 3D mode.^[2] There are nine skill levels: beginner to grandmaster. Resigning is not included in the game.^[3] Sampled speech option is included which is useful for people with visual impairment.^[2][3] Features that help new players include a hint system, any number of moves can be taken back, the sides can be swapped any time, and the computer can be forced to move before it has thought its move. In Adaptive mode, the computer will decide its move in the time it takes the player to complete a turn. Problem mode places a specific chess problem for the player to solve. For the hardest challenge, in Infinite mode the computer will take as long as it needs to make its move.^[2]

Mean Machines concluded: "A decent, if expensive, game which is best recommended to chess fans who have no-one to play against."^[2] Sega Force praised the difficulty curve and summarized: "Against competition, a brilliant adaptation of an ancient game".^[3] Sega Power said: "If you can't play it, it won't teach you, but lonely chess players will absolutely love this version."^[4] Video Games [de] praised the graphics and controls.^[6] Games-X said: "Sega Chess is everything a chess buff could possibly want on the Master System, and offers an enjoyable game to players at all skill levels."^[5]