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BGonline.org Forums
Ref-Spares-854-or-764-or-863-vs-3-on-bar-and-good-board.sgf
Posted By: Timothy Chow In Response To: Ref-Spares-854-or-764-or-863-vs-3-on-bar-and-good-board.sgf (Petter Bengtsson)
Date: Thursday, 10 June 2010, at 10:31 p.m.
In general I think it is very difficult to come up with a position that you can prove is unreachable with perfect play (assuming it is reachable at all). I've seen a couple of examples but they were contrived expressly to demonstrate the possibility. I think you underestimate what kinds of things you can force when you are allowed to control both dice.
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