Zarezin Ivan
From Yekaterinburg, Russia
EMA: 15020003
Internal rating (RR)
Rating date Jan. 26, 2026 (latest changes Jan. 26, 2026).
115 place (362.56).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95
p1 = (401.87 * 4.60 * 0.29 + 808.51 * 2.80 * 0.43 + 873.42 * 3.65 * 0.57 + 0 + 0) / (4.60 * 0.29 + 2.80 * 0.43 + 3.65 * 0.57 + 1 + 1) = 503.041708144505
p2 = (873.42 * 3.65 * 0.57 + 808.51 * 2.80 * 0.43 + 401.87 * 4.60 * 0.29) / max_coefficients = 222.07558528428092
score = 503.041708144505 * 0.5 + 222.07558528428092 * 0.5 = 362.5586467143929
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-01-25 | 112 -> 115 | 362.56 | |
| 2026-01-14 | 107 -> 112 | 382.09 -> 362.56 |
Guardian of the Winds: 57% -> 43% |
| 2026-01-12 | 107 | 385.84 -> 382.09 |
X Russian Championship: 43% -> 29% |
| 2026-01-07 | 105 -> 107 | 385.84 | |
| 2026-01-01 | 107 -> 105 | 385.84 | |
| 2025-12-13 | 106 -> 107 | 385.84 | |
| 2025-12-07 | 105 -> 106 | 385.84 | |
| 2025-12-04 | 101 -> 105 | 412.65 -> 385.84 |
Riichi over Volga: 71% -> 57% |
| 2025-11-30 | 100 -> 101 | 412.65 | |
| 2025-11-14 | 94 -> 100 | 429.89 -> 412.65 |
Guardian of the Winds: 71% -> 57% |