Attempt Number: 3
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 is to move the robot horizontally to continue painting the row above. Since the robot is at tile_1-0 and the tile above it (tile_0-0) is already painted, the robot should move to the right to tile_1-1 to position itself for painting the next tile above (tile_0-1). This action aligns with the goal of painting the first row in an alternating color pattern.

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

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