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

Action Reasoning:
The robot is currently at tile_1-2 and needs to move to tile_1-0 to start painting the first row. The shortest path to tile_1-0 is to continue moving left. Since the robot is holding the white paint gun and the first tile to be painted (tile_0-0) requires black, the robot will need to change its paint color once it reaches tile_1-0. However, the immediate next step is to move left to get closer to tile_1-0.

New State Description:
Robot1 has moved from tile_1-2 to tile_1-1. Tile_1-2 is now clear, and tile_1-1 is occupied by the robot. The robot is still holding the white paint gun.

Action Chosen:
left(robot1, tile_1-2, tile_1-1)
