The TRS-80 verson of Microchess 2 uses 2K for the game programming and 2 K for the chessboard programming. Apparently Microchess 2 sold over 1 million copies on the TRS-80, probably enough to make the Canadian programmer Peter Jennings a rich man. Microchess 2 was one of the first games produced for TRS-80.
A great publicity which helped Peter Jennings in the sales of Microchess 2 was Bobby Fischer requesting one day to play Microchess which generated a lot of interest. Obviously he won easily.