Attempt Number: 2
Error Message: The action "left(robot1, tile_1-4, tile_1-3)" and the resulting child state have already been explored previously.

Action Reasoning:
The last action taken was "paint-up," which means the next step should be to move the robot horizontally if there are unpainted tiles in the row above. Since the robot is currently at tile_1-4 and the goal is to paint tile_0-0 black, the robot should move left to reach tile_1-0. This will position the robot to paint the remaining unpainted tiles in the row above.

New State Description:
Robot1 moves from tile_1-4 to tile_1-3. Tile_1-4 is now clear, and tile_1-3 is occupied by Robot1.

Action Chosen:
left(robot1, tile_1-4, tile_1-3)
