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Colossus Chess X (Atari ST)

Colossus Chess X Atari ST Title screen


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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 Atari ST Playing with blindfold
Colossus Chess X Atari ST Title screen
Colossus Chess X Atari ST Top-down view
Colossus Chess X Atari ST Isometric view

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Alternate Titles

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

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User Reviews

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Critic Reviews

Computer and Video Games (CVG) Jan, 1989 91 out of 100 91
Atari ST User Feb, 1989 9 out of 10 90
The One Jan, 1989 88 out of 100 88
ST/Amiga Format Dec, 1988 87 out of 100 87
The Games Machine (UK) Jul, 1989 86 out of 100 86


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  • 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.
Rola (8301) added Colossus Chess X (Atari ST) on Dec 28, 2012
Other platforms contributed by Rola (8301)