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Individual Calculations February 2023 |
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| Patt, Zafrir Total change: -16.20 | |   |
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| Kfar Saba Championship for Veterans in Chess | Kfar Saba | ISR | 2022-12-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1608 | 1779 | 4.50 | 7 | -0.44 | 20 | -8.80 | |
|  Lubish, Mordechai | | | 1549 | ISR | 0.50 | 1 | -0.29 | 20 | -5.80 | |  Kaplan, Amiram | | | 1779 | ISR | 0.00 | 1 | -0.50 | 20 | -10.00 | | | Gorelikov, Israel | | | 1580 | ISR | 0.50 | 1 | -0.26 | 20 | -5.20 | | | Dor, Avigdor | | | 1531 | ISR | 1.00 | 1 | 0.19 | 20 | 3.80 | | | Galant, Chaim | | | 1379 * | ISR | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Schwarz, Harry | | | 1750 | ISR | 0.50 | 1 | -0.04 | 20 | -0.80 | | | Gerchikov, Pavel | | | 1691 | ISR | 1.00 | 1 | 0.38 | 20 | 7.60 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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) | | | | League Alef Hadarim 2023 1-2 | Israel | ISR | 2023-01-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1826 | 1779 | 0.50 | 2 | -0.37 | 20 | -7.40 | |
| | Lavi, Nitay | | | 1718 | ISR | 0.00 | 1 | -0.58 | 20 | -11.60 | | | Kalejman, Hector | | | 1933 | ISR | 0.50 | 1 | 0.21 | 20 | 4.20 | |
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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