| Player data |
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 | SNo | 4 | FIDE | R 2037 | Local | 2300 |
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| Name | Olszewski, Marek | Fed | POL | R.ChessArbiter | 2261 |
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| Club | BKS Chemik Bydgoszcz | Title | k+ | Local ID | PL-1090 |
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| Code | 1114956 | Sex | M | Birthday | 1960 |
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| Number of rated opponents: | 9 | Score vs. rated opponents: | 6.0 |
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| Average rating: | 1771 | Rating Change: | -0.40 |
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