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Blitz:
Individual Calculations September 2021 |
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| Johannesson, Petur Total change: 3.80 | |   |
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| Arbaejarsafnsmotid 2021 | Reykjavik | ISL | 2021-08-15 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1376 | 789 | 0.00 | 5 | -0.19 | 20 | -3.80 | |
|  Antonsson, Atli | | | 1524 | ISL | 0.00 | 1 | -0.01 | 20 | -0.20 | |  Johannsson, Markus Orri | | | 1270 | ISL | 0.00 | 1 | -0.05 | 20 | -1.00 | | | Magnusson, Thorsteinn | | | 1495 | ISL | 0.00 | 1 | -0.01 | 20 | -0.20 | | | Omarsson, Josef | | | 1145 | ISL | 0.00 | 1 | -0.11 | 20 | -2.20 | | | Olafsson, Arni | | | 1447 | ISL | 0.00 | 1 | -0.01 | 20 | -0.20 | |
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) | | | | Borgarskakmotid 2021 | Reykjavik | ISL | 2021-08-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1315 | 789 | 1.00 | 6 | 0.64 | 20 | 12.80 | |
| | Thorsteinsson, Aron Ellert | | | 1524 | ISL | 0.00 | 1 | -0.01 | 20 | -0.20 | | | Audarson, Odinn Freyr | | | 1492 | ISL | 0.00 | 1 | -0.01 | 20 | -0.20 | | | Sigurvaldason, Hjalmar | | | 1402 | ISL | 0.00 | 1 | -0.02 | 20 | -0.40 | | | Omarsson, Josef | | | 1145 | ISL | 0.00 | 1 | -0.11 | 20 | -2.20 | | | Kristbergsson, Bjorgvin | | | 1068 | ISL | 1.00 | 1 | 0.84 | 20 | 16.80 | | | Jonasson, Hordur | | | 1259 | ISL | 0.00 | 1 | -0.05 | 20 | -1.00 | |
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) | | | | Crazy Culture skakmot Vinaskakfelagsins 2021 | Reykjavik | ISL | 2021-08-23 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1384 | 789 | 0.00 | 6 | -0.26 | 20 | -5.20 | |
| | Eliasson, Kristjan Orn | | | 1524 | ISL | 0.00 | 1 | -0.01 | 20 | -0.20 | | | Sigurvaldason, Hjalmar | | | 1402 | ISL | 0.00 | 1 | -0.02 | 20 | -0.40 | | | Kristbergsson, Bjorgvin | | | 1068 | ISL | 0.00 | 1 | -0.16 | 20 | -3.20 | | | Thordarson, Sturla | | | 1524 | ISL | 0.00 | 1 | -0.01 | 20 | -0.20 | | | Jonasson, Hordur | | | 1259 | ISL | 0.00 | 1 | -0.05 | 20 | -1.00 | | | Sigurdsson, Arnljotur | | | 1524 | ISL | 0.00 | 1 | -0.01 | 20 | -0.20 | |
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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