Attempt Number: 3
Error Message: Action not unique compared to other actions chosen from this state before. Choose a new action

Action Reasoning:
Since the robot is holding black and standing on tile_1-3, it can paint tile_2-3 directly below with black to fulfill the goal state requirements.

New State Description:
- Tile_0-1 is clear.- Tile_0-2 is clear.- Tile_0-3 is clear.- Tile_0-4 is clear.- Tile_0-5 is clear.- Tile_1-1 is clear.- Tile_1-2 is clear.- Tile_1-3 is occupied by robot1 holding color black.- Tile_1-4 is clear.- Tile_1-5 is clear.- Tile_2-1 is clear.- Tile_2-2 is clear.- Tile_2-3 is painted black and is no longer clear.- Tile_2-4 is painted white and is no longer clear.- Tile_2-5 is painted black and is no longer clear.- Robot1 is on tile_1-3 holding color black.- Color white is available for switching.- Color black is available for switching.

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