this situation is a toughie to call. If your base is surrounded by bombs as well you can get/trap him... there are many variables to look at though.. 1. Does he know which piece is your 5? 2. Does he know that your sweepers are all gone? 3. is your base protected as well? If he does not know which piece is your 5 than you can trick him, also if he still thinks you ahve sweepers then he may run from your "?" pieces. id jsut put all my pieces as clsoe together and attack him. or split up to try and trick him. But basically if your opponent kept good notes he should be able to force the draw unless he blunders badly. just by running in circles. sweepers are too valueable to give away. I will always try to keep one even if it means giving up material advantage. Being Without one makes his bombs and 5s nearly invincible.