| Player data |
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 | SNo | 14 | FIDE | 0 | Local | 1400 |
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| Name | Maćkowiak, Oskar | Fed | POL | R.ChessArbiter | 0 |
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| Club | UKS Czternastka Warszawa | Title | IV | Local ID | PL-102670 |
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| Code | 41834909 | Sex | M | Birthday | 2014 |
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| Number of rated opponents: | 0 | Score vs. rated opponents: | 0.0 |
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| Average rating: | 0 | Rating Change: | 0.00 |
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