11-15 22-18, 15-22 25-1811-15, sometimes called Old Faithful, is the strongest opening move by Black as evidenced by its use 95% of the games by experts in go-as-you-please (GAYP = unrestricted) play. Black exits from a single corner, as opposed to a double corner, towards the center. It is so strong that more responses have been used by White to obtain equality than any other reply. Irrespective of the reply, Black has a theoretical edge. 22-18 ("Single Corner"), 23-19 and 23-18 are the most popular replies. 22-17 is adequate, but 24-20 ("Ayrshire Lassie"), 24-19 and 21-17 are inferior. 24-20 is the most popular reply among amateurs. (22-18 is called the Single Corner because White replies from his single corner.) |