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BGonline.org Forums
easy backgame to hard for me
Posted By: Daniel Murphy In Response To: easy backgame to hard for me (John O'Hagan)
Date: Thursday, 29 November 2012, at 5:22 p.m.
23/22(2) 6/4 looks good to me, too.
John mentioned the 160-120 = 40 pip difference. What I believe Blue should see because of that is that after playing 1-1, Blue can only move about 30 pips (for example, 13/3 twice, 7/4, 7/1 and 2/1) without breaking his board before being forced off off his 21 point. That's only 4 rolls worth of pips. Four rolls from now, White will probably still have a 5-prime with builders on top, and might make his 3 point also, if Blue doesn't make it now. So Blue should expect to be forced off the 21 point at a bad time, and ask whether he'd rather his single anchor then be the 22 point or a very well primed 23 point. The 23 point allows for a longer-lasting defense, but if Blue is back on the 23 point, White is likely to be able to go after his 4 and 3 points rather safely and slowly -- keeping his prime while extending it. Consequently, even if Blue can leave the 21 point without being pointed on, it seems questionable whether the board-holding timing of Blue's two 21 point checkers would be enough to give Blue a good 23 point game.
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