Attempt Number: 4
Error Message: The action and resulting child state have already been explored.

Action Reasoning:
The last action taken was "paint-up," which means the next logical step is to move the robot. Since the robot is currently on tile_1-4, and the objective is to create an alternating color pattern starting from tile_0-0, the robot should move horizontally to the left towards tile_1-3. This will position the robot to eventually paint the unpainted tiles on the row above.

New State Description:
Robot1 moves from tile_1-4 to tile_1-3, leaving tile_1-4 clear and occupying tile_1-3.

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