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 should move down to tile_2-1 to start painting the bottom row. Tile_2-1 needs to be painted black, which aligns with the robot's current color. This move is necessary for progression towards the goal.

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. 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)
