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

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 tile_0-0 is not painted, the robot should move left to tile_1-0. This action aligns with the goal of painting the first row in an alternating color pattern, starting with black at tile_0-0.

New State Description:
Robot1 moves from tile_1-1 to tile_1-0, holding black paint. Tile_1-1 is now clear, and tile_1-0 is occupied by Robot1.

Action Chosen:
left(robot1, tile_1-1, tile_1-0)
