A formula devised by Rick Janowski for estimating match equity (1) at a given score. If d is the difference in match score and t is the number of points (4) the trailing player has to go, then the probability of the leading player winning the match is .5 + .85_d_ / (t+6). See also: Neil's Numbers and Turner's Formula.
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- فارسی فرمول یانوفسکی