Zarezin Ivan
From Yekaterinburg, Russia
EMA: 15020003
Common russian riichi rating (CRR)
Rating date July 9, 2023 (latest changes July 9, 2023).
75 place (359.23).
how we calculated rating score
max_coefficients = (4.20 * 1 + 3.75 * 1 + 4.05 * 0.86 + 2.80 * 1) = 14.221255
p1 = (440 * 4.20 * 1 + 540.23 * 3.75 * 1 + 358.21 * 3.50 * 0.71 + 0 + 0) / (4.20 * 1 + 3.75 * 1 + 3.50 * 0.71 + 1 + 1) = 383.0827988642615
p2 = (540.23 * 3.75 * 1 + 440 * 4.20 * 1 + 358.21 * 3.50 * 0.71) / max_coefficients = 335.3712453647727
score = 383.0827988642615 * 0.5 + 335.3712453647727 * 0.5 = 359.2270221145171
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2023-07-03 | 76 -> 75 | 359.23 | |
| 2023-06-19 | 57 -> 76 | 390.54 -> 359.23 | |
| 2021-02-01 | 70 -> 57 | 496.26 -> 390.54 | |
| 2020-02-01 | 70 | 496.26 |