Zarezin Ivan
From Yekaterinburg, Russia
EMA: 15020003
Internal rating (RR)
Rating date Aug. 11, 2025 (latest changes Aug. 9, 2025).
76 place (474.25).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.85 * 1 + 3.75 * 1 + 3.50 * 1) = 15.2
p1 = (401.87 * 4.60 * 0.71 + 808.51 * 2.80 * 0.86 + 873.42 * 3.65 * 0.86 + 0 + 0) / (4.60 * 0.71 + 2.80 * 0.86 + 3.65 * 0.86 + 1 + 1) = 554.2027404100675
p2 = (873.42 * 3.65 * 0.86 + 808.51 * 2.80 * 0.86 + 401.87 * 4.60 * 0.71) / max_coefficients = 394.2888157894737
score = 554.2027404100675 * 0.5 + 394.2888157894737 * 0.5 = 474.2457780997706
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-08-04 | 71 -> 76 | 494.50 -> 474.25 |
Riichi over Volga: 100% -> 86% |
| 2025-08-03 | 72 -> 71 | 494.50 | |
| 2025-07-14 | 67 -> 72 | 509.12 -> 494.50 |
Guardian of the Winds: 100% -> 86% |
| 2025-07-13 | 66 -> 67 | 509.12 | |
| 2025-07-12 | 65 -> 66 | 508.79 -> 509.12 |
X Russian Championship: 86% -> 71% |
| 2025-07-03 | 66 -> 65 | 508.79 | |
| 2025-06-15 | 58 -> 66 | 515.45 -> 508.79 | |
| 2025-06-11 | 53 -> 58 | 548.16 -> 515.45 |
Money can not buy tenpai: 14% -> 0% |
| 2025-06-08 | 52 -> 53 | 548.16 | |
| 2025-05-12 | 53 -> 52 | 540.95 -> 548.16 |
X Russian Championship: 100% -> 86% |