MASTERCHESS was a budget game sold by the British software company Mastertronics. It is very weak and possibly the weakest commercial chess game ever made for a Commodore 64.

Press the ESC key on your PC for the Options Menu.

You can read about the original MASTERCHESS here:

The playing strength of MASTERCHESS is approximately 900-950 ELO (1100 - 1150 USCF).

The Spacious-Mind Active game results (shown above) are from games played with a Commodore 64 or 128. Playing MASTERCHESS with an Emulator should play exactly the same as using a Commodore 64 or 128.

The game example below originates from the C64 Open Championship and was played with a real Commodore 64 or 128 and original MASTERCHESS software, however the Emulator Software should play exactly as the original game.