Professor Glicko over at Boston University's math department will be so dissapointed to hear you don't approve of his rating system. Actually even though the Glicko system is used, it's only part of how the TT is scored, and even Professor Glicko doesn't understand the whole picture. Last year the "We hate chess.com's tactics trainer" group met in my neighborhood. It was so exciting although it was kind of hard to hear the speakers. This year we need a bigger venue; Fenway Park is just too small.
Not fair rules
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The increament and decreament of score in tactics not fair and has no base. if I solve at most get 6 points and if not I loss 9. points