nodnarbo: no choice, 2 squares at the time.
It's faster and powerfully strategic. Each and every move not only removes points from the squares Plow goes thru but also cancells mirrors and any chosen double .somewhere on the board. So 4 tiles are stripped from the points after each move... now, the whole idea is to choose the proper direction and not only to collect points from the squares you go thru, but to eliminate points from the opponent's path ...
Andy.