Join our Discord to chat with fellow friendly gamers and our knowledgeable contributors!

Not an American user?


Colossus Chess X is the first 16-bit adaptation of the chess games series by Martin P. Bryant.

This fully fledged program understands all the rules of chess including, underpromotion, the fifty move rule and draws by repetition, it can achieve the king-bishop-knight mate. The new features are a modifiable opening book of 11000 moves, the program also learns new lines of play from playing experience. You can also play against the clock, try a blindfold mode or use the program to solve mating problems.

Apart from the standard 2D board there's a 3D one, which can be freely rotated. Four graphical chess piece sets available, music & speech, demonstration mode.


Colossus Chess X DOS You can rotate the board (EGA)
Colossus Chess X DOS Playing (EGA).
Colossus Chess X Atari ST Title screen
Colossus Chess X DOS Title Screen (EGA).

Promo Images

There are no promo images for this game

Alternate Titles

  • "Colossus X Chess" -- In-game title

Part of the Following Group

User Reviews

There are no reviews for this game.

Critic Reviews

Computer and Video Games (CVG) Atari ST Jan, 1989 91 out of 100 91
Atari ST User Atari ST Feb, 1989 9 out of 10 90
The One Atari ST Jan, 1989 88 out of 100 88
ST/Amiga Format Atari ST Dec, 1988 87 out of 100 87
The Games Machine (UK) Atari ST Jul, 1989 86 out of 100 86
Tilt DOS Sep, 1990 17 out of 20 85
The Games Machine (UK) Amiga Aug, 1989 82 out of 100 82
Joker Verlag präsentiert: Sonderheft DOS 1993 64 out of 100 64
Joker Verlag präsentiert: Sonderheft Amiga 1993 64 out of 100 64
ASM (Aktueller Software Markt) Amiga Jul, 1989 6.8 out of 12 57


There are currently no topics for this game.



  • ST Format
    • May 1990 (Issue #10) - Included in the list "ST Format's 30 Kick-Ass Classics"

Copy Protection

The CD DOS release has a spiral bound manual. Along the bottom of each the first twenty-four pages are five groups of ten characters, when a game of Chess, Backgammon or Draughts starts the player is prompted for character x on page y. The player gets two chances to get this right before the game freezes and plays a continuous, annoying, note.
Contributed to by Rola (8304)