Attempt Number: 5
Error Message: Action not unique compared to other actions chosen from this state before. Choose a new action

Action Reasoning:
The robot should move down to start painting row 2 tiles. This aligns with the constraint to start painting from the last row and matches the goal state order.

New State Description:
Tile tile_0-1 is clear. Tile tile_0-2 is clear. Robot1 is on tile_1-3, holding color white. Tiles 1-1, 1-2, 2-1, 2-2, and 2-3 are clear. Colors white and black are available for switching.

Action Chosen:
down(robot1, tile_0-3, tile_1-3)
