| Player data |
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 | SNo | 15 | FIDE | 1587 | Local | 2000 |
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| Name | Herka, Jakub | Fed | POL | R.ChessArbiter | 0 |
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| Club | Gens Una Sumus Kraków | Title | I | Local ID | PL-77677 |
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| Code | 21023743 | Sex | M | Birthday | 2007 |
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| Number of rated opponents: | 3 | Score vs. rated opponents: | 1.5 |
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| Average rating: | 1379 | Rating Change: | -0.64 |
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