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Topic: One false move
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kingdaveUnited States flag
Ouch, Blutigeroo. No, the catastrophic moves in that game (900382) are all mine. The game is this one: http://queenalice.com/game.php?id=949508 , and the move in question is 13. ... Qb4+.
Given the haziness of some of the details and the large number of variables, I wouldn't try too hard to reconstruct exactly what happened at this point.

Blutigeroo
Wow, that is a bad move. Pretty rare to put a queen next to a rook like that. Perhaps I might ... I tend to lose queens easily.

I recall another post about someone who believed a move had been made for them. That person was quite sure about it too so there may be a bug somewhere. We'll have to wait for the next time!

The only other thing I would wonder about is if there was any way that someone made a move for you on the other computer. If that is unlikely, I'd change my password just as a precaution. ;-)

seigneurCanada flag
I'd like to point out that the move Qb4+ is consistent with everything I said, provided that the server uses coordinates (x0, y0) to make the moves (which is what I believed in the first place).

Move 9: c5-b4
Move 13: c5-b4 (identical moves)

If you believe that it is possible that moves 9 and 13 were played on the one computer, and that moves 10-12 were played on another computer, then it is exactly what happened. No need to search further.

Blutigeroo
Yes, that has some plausibility, seigneur. It still requires that only the From and To coordinates are sent, and also perhaps that the move fields were not cleared internally (even though they are visually).

It should be quite easy to test out. I will waste a move in one of my games now and then repeat it. I'll 'save' the first situation in IE since I normally don't use that browser.

kingdaveUnited States flag
seigneur, good catch on the repeat of c5-b4, although the game was past that point by the time I left computer 1. This I know for certain because I still have the email notifications. However, the theory still has hope because between having multiple browser windows up and then multiple tabs in each, I have been known to have more than one QA open on a single computer, and one could have been left in that state. I think the idea of experimenting is probably better than trying to reconstruct my situation. Blutigeroo, instead of messing with your real games, we could set up an experimental game. Here is a very short sequence that would test seigneur's theory: 1. e4 Nf6 2. Qe2 Nxe4 3. Qxe4.
White's moves 1 and 3 are both e2 to e4. So white would play move 1 and leave the window up, play move 2 in a different window, then try to play move 3 by refreshing the first window. It would be worth doing this twice, once with moves 1 and 2 on the same computer, and once on different computers.

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