Zarezin Ivan
From Yekaterinburg, Russia
EMA: 15020003
Internal rating (RR)
Rating date May 12, 2024 (latest changes May 12, 2024).
80 place (343.55).
how we calculated rating score
max_coefficients = (4.60 * 1 + 4 * 1 + 3.75 * 1 + 3.05 * 1) = 15.399999999999999
p1 = (440 * 4.20 * 0.43 + 540.23 * 3.75 * 1 + 401.87 * 4.60 * 1 + 0 + 0) / (4.20 * 0.43 + 3.75 * 1 + 4.60 * 1 + 1 + 1) = 384.071103824489
p2 = (540.23 * 3.75 * 1 + 401.87 * 4.60 * 1 + 440 * 4.20 * 0.43) / max_coefficients = 303.0201298701299
score = 384.071103824489 * 0.5 + 303.0201298701299 * 0.5 = 343.5456168473095
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2024-05-12 | 75 -> 80 | 274.01 -> 343.55 |
X Russian Championship: 0% -> 100% |
| 2024-05-06 | 73 -> 75 | 285.14 -> 274.01 |
IX Russian Riichi Championship: 57% -> 43% |
| 2024-04-12 | 75 -> 73 | 285.14 | |
| 2024-03-30 | 70 -> 75 | 285.14 | |
| 2024-03-19 | 67 -> 70 | 311.47 -> 285.14 | |
| 2024-03-10 | 58 -> 67 | 332.10 -> 311.47 | |
| 2024-03-06 | 57 -> 58 | 338.00 -> 332.10 |
IX Russian Riichi Championship: 71% -> 57% |
| 2024-02-28 | 65 -> 57 | 343.80 -> 338.00 | |
| 2021-02-01 | 80 -> 65 | 439.90 -> 343.80 | |
| 2020-02-01 | 80 | 439.90 |