Attempt Number: 2
Error Message: The action right(robot1, tile_1-0, tile_1-1) has already been explored, resulting in the same child state.

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_0-1 is not painted, the robot should move right from tile_1-0 to tile_1-1. This action aligns with the goal of painting the first row in an alternating color pattern, starting with black.

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

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