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Jilin Zhang vs Inna Gaponenko
Women's World Championship Knockout Tournament (2008), Nalchik RUS, rd 1, Aug-29
Sicilian Defense: Richter-Rauzer. Classical Variation (B63)  ·  1/2-1/2

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
Sep-23-09  JimmyVermeer: 18 Bg3 Rab8 just doesn't make any sense. What happened here? I'm guessing Black accidentally touched her rook and was thus bound by the touch-move rule, but that still doesn't explain White's move. She gives up a queen for nothing! I compared this to the PGN on the official FIDE website, and sure enough, the same moves are listed there, so it's not just a transcription error on chessgames.com's part.
Sep-23-09  JimmyVermeer: 18...Qxg2 was surely the correct move here, after which Black wins easily. Now I see mistakes in chess games all the time, but I've never seen one of this magnitude in a world championship match before.
Nov-02-09
Premium Chessgames Member
  Phony Benoni: I suspect that neither 18th move was actually played, but got into the game score through some sort of recording error. If you just jump from move 17 to 19, everything makes perfect sense.

One problem with having computers perform mundane tasks like keeping score and transmitting PGNs is that nobody checks the game scores for obvious stuff like this. Yes, there are incomprehensible blunders or time pressure lapses, but you can ususally tell when something is too incredibly stupid to have happened.

The problem is that once an error like this gets into the game score, it is immediately copied unthinkingly into scores of databases worldwide. Even if the game gets corrected in the original source there is no guarantee it will be corrected elsewhere, and people copying those incorrect databases will perpetuate the error.

If I had my way and several billion dollars, I'd dictate that every game had to go through a quick Rybka check so that obvious swings such as occur here could be flagged and checked out before the game could be admitted to the Never-Changing World of Database Immortalitiy.

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