Attempt Number: 4
Error Message: Action not unique compared to other actions chosen from this state before. Choose a new action

Action Reasoning:
The robot is on tile_1-3 holding black and ready to paint. The best action is to paint-down because it fulfills the condition to paint the only tile below the robot, tile_2-3, which needs to be black. This progresses the goal while following rules.

New State Description:
Robot1 is on tile_1-3, holding black. Tile_2-3 is painted black. Tiles 0-1, 0-2, 0-3, 1-1, 1-2 are clear. Tile_3-1 is painted white, tile_3-2 black, and tile_3-3 white. Color white and black are available for switching.

Action Chosen:
paint-down(robot1, tile_2-3, tile_1-3, black)
