Attempt Number: 2
Error Message: The action and resulting child state have already been explored.

Action Reasoning:
The robot is currently at tile_1-3 and holding white paint. According to the goal state, the first tile to be painted is tile_0-0, which should be black. The robot needs to move to tile_1-0 to start painting the first row. Since the robot is not yet at tile_1-0, the best action is to move left towards tile_1-0. This will bring the robot closer to the starting point for painting the first row in the correct sequence.

New State Description:
Robot1 has moved from tile_1-3 to tile_1-2. Tile_1-3 is now clear, and tile_1-2 is occupied by the robot. Robot1 is still holding the white paint gun.

Action Chosen:
left(robot1, tile_1-3, tile_1-2)
