Attempt Number: 6
Error Message: Action not unique compared to other actions chosen from this state before. Choose a new action

Action Reasoning:
Robot1 is currently holding white and on tile_1-3. To proceed towards the goal, we need to paint tile_2-3 black. This requires changing the robot's color to black to paint the correct color.

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 occupied by robot1, who is now holding color black. Tile tile_2-1 is clear. Tile tile_2-2 is painted white. Tile tile_2-3 is clear. Colors white and black are available for switching.

Action Chosen:
change-color(robot1, white, black)
