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

Action Reasoning:
The robot needs to paint tile_2-1 black to match the goal state for row 2. Moving down to paint tile_2-1 aligns with this objective, and the current color held by the robot is black, which is the correct color for tile_2-1.

New State Description:
Tile tile_0-1 is clear. Tile tile_0-2 is clear. Tile tile_0-3 is clear. Tile tile_1-1 is clear. Tile tile_1-2 is clear. Tile tile_1-3 is clear. Tile tile_2-1 is occupied by robot1 holding color black. Tile tile_2-2 is painted white. Tile tile_2-3 is painted black. Robot1 is on tile_2-1, holding color black. Colors white and black are available for switching.

Action Chosen:
down(robot1, tile_1-1, tile_2-1)
