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I think I found a nasty bug in the evaluation of matches that are set up for a fixed amount of games. Here is a match that was for 5 games, and I won it 3:2: Fevga (Aganju vs. Doris) However, the fifth/last game of the match went to my opponent (so I lead 3:1, and then it ended 3:2 - still a win for me). The event message I got, however, declared that *I lost*, and deducted some points from my rating (and gave rating points to my opponent).
I would guess that the code uses the result from the last game for its decisions, as - typically - the winner of the last game is the winner of the match - but not for this type of match.
Aganju: I think what you'll find is that although it claims that you lost and shows rating points going down for you, if you look closer you'll find that the names don't match the rating points, and that your points actually go up.
So it works something like this. Let's say you and I played, and you won the match but I won the last game. Let's also say your rating was 2100 and mine was 1900 before the game. It will say something like Carpe Diem won, 2100 (+13), and Aganju lost 1900 (-11). I actually lost the 11 I should have, and you gained the 13, it just gives the wrong names in the message.
This bug's been there since I started playing here. It's simply a display error, not a problem with rating points.
Subject: Re: Is there a nasty bug in the evaluation of multi-game matches?
Carpe Diem: I know that display error, but that was under different circumstances (I think when you tie or so). of course it could be the same effect here. Unfortunately, I tossed the event message; I'll check the next time.
happyjuggler0: good point! I didn't even know there is a 'trash' there... yes, it was in there. It says:
Game ID: 7461994 Doris is the winner.
Doris: old BKR = 2100, new BKR = 2109 (+9) Aganju: old BKR = 2049, new BKR = 2038 (-11)
But as Carpe Diem predicted, the names are switched - I checked her stats, and she was not anywhere near the 2100 in the last week (and I was not anywhere near 2050).
So, thanks all, everything is good, just the names switched.
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