| Player data |
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 | SNo | 11 | FIDE | 1667 | Local | 2000 |
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| Name | Grochulski, Krzysztof | Fed | POL | R.ChessArbiter | 1819 |
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| Club | KSz Hetman Płock | Title | I | Local ID | PL-2454 |
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| Code | 1154702 | Sex | M | Birthday | 1971 |
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| Number of rated opponents: | 5 | Score vs. rated opponents: | 3.5 |
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| Average rating: | 1284 | Rating Change: | -0.83 |
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