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

Action Reasoning:
The last action taken was a move to the right, which means the next logical step is to change the color of the paint gun. This is necessary because the goal state requires an alternating color pattern, and the next tile to be painted (tile_0-2) should be black. Since Robot1 is currently holding white, changing the color to black aligns with the goal state requirements.

New State Description:
Robot1, located on tile_1-2, changes its paint gun color from white to black. The robot is now ready to paint the next tile above it with black.

Action Chosen:
change-color(robot1, white, black)
