| Player data |
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 | SNo | 18 | FIDE | 1821 | Local | 1900 |
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| Name | OLSZEWSKI, Antoni | Fed | POL | R.ChessArbiter | 1280 |
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| Club | UKS TSz Zieloni Zielonka | Title | II+ | Local ID | PL-67729 |
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| Code | 21001898 | Sex | M | Birthday | 2009 |
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| Number of rated opponents: | 9 | Score vs. rated opponents: | 4.5 |
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| Average rating: | 1707 | Rating Change: | -1.38 |
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