Tiar

Tiar is a logic game for the TRS-80.

The player is presented with a game in a 3 x 3 grid, with 3 icons located within each box. The player can perform 5 separate operations, which in some way modify the boxes and the player's score. The goal is to figure out the rules of the game, as well as achieve a score of 400 points by understanding and then applying the game's rules.