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Individual Calculations May 2017 |
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| Ralphs, Nigel Total change: 0.60 | |   |
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| Welsh Chess Premier League 2016/17 Round 4 | Merthyr | WLS | 2017-04-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2195 | 2058 | 0.50 | 1 | 0.18 | 20 | 3.60 | |
|  Jones, Iolo C | f | | 2195 | WLS | 0.50 | 1 | 0.18 | 20 | 3.60 | |
Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change) | | | | 2017 Welsh Championships | Cardiff | WLS | 2017-04-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1978 | 2058 | 3.50 | 6 | -0.15 | 20 | -3.00 | |
| | Bevan, Peter M | | | 1933 | WLS | 0.50 | 1 | -0.17 | 20 | -3.40 | |  Taylor, Robert Graham | | | 1932 | WLS | 0.50 | 1 | -0.17 | 20 | -3.40 | | | Hatchett, Paul | | | 2022 | WLS | 0.50 | 1 | -0.05 | 20 | -1.00 | | | Waterfield, John W | | | 1948 | WLS | 0.50 | 1 | -0.15 | 20 | -3.00 | | | Morcom, Huw | | | 1925 | WLS | 1.00 | 1 | 0.32 | 20 | 6.40 | | | Bullen, Alex | | | 2105 | WLS | 0.50 | 1 | 0.07 | 20 | 1.40 | |
Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change) | | |
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