Marshmud: I was not aware that blocking a long line of pieces was against the rules. It has happened to me many times and I am sure I have done the same to other players a few times. However there have been times when it would not let me place a piece where I have wanted to because it would mean blocking the other player. When I have been blocked and there is no way I could win I resign the game as I don't see any point in holding up a tournament. As we all know some tournaments can take years to be completed.