One of a series of games from A.R.Software which was missing for some time. Peter Weighill has kindly informed us that the game has turned up on Gamebase here:
http://www.gb64.com/game.php?id=15230
Hexapawn is described in the advert as a game for strategic and persistent play. The opponent (computer) has no initial strategy, but is programmed to learn from the user’s wins to improve its own strategy.
Case closed!
Contributions: Peter Weighill