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In a proof, we would probably count horizontal and vetical distance separately, so L3U4, for example, which fits on a 13x13 board, would be seven spaces from center.
(hide) If you want to save on bandwidth you can reduce the amount of information that shows up in your pages in the Settings. Try changing the number of games in the main page and the number of messages per page. (pauloaguia) (show all tips)