| Player data |
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 | SNo | 10 | FIDE | R 2347 | Local | 2400 |
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| Name | Kosiorek, Marek | Fed | POL | R.ChessArbiter | 2340 |
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| Club | UKS TSz Zieloni Zielonka | Title | m | Local ID | PL-2752 |
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| Code | 1110284 | Sex | M | Birthday | 1976 |
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| Number of rated opponents: | 9 | Score vs. rated opponents: | 5.5 |
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| Average rating: | 2169 | Rating Change: | -0.95 |
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