Ivanov Anton
From Ufa, Russia
Common russian riichi rating (CRR)
Rating date May 17, 2026 (latest changes May 17, 2026).
267 place (177.54).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.45 * 1 + 3.40 * 1) = 14.85
p1 = (851.06 * 2.80 * 0.14 + 333.33 * 1.20 * 0.57 + 434.78 * 1.60 * 1 + 0 + 0) / (2.80 * 0.14 + 1.20 * 0.57 + 1.60 * 1 + 1 + 1) = 269.9090870288957
p2 = (434.78 * 1.60 * 1 + 851.06 * 2.80 * 0.14 + 333.33 * 1.20 * 0.57) / max_coefficients = 85.16767676767675
score = 269.9090870288957 * 0.5 + 85.16767676767675 * 0.5 = 177.53838189828625
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-05-17 | 268 -> 267 | 177.54 | |
| 2026-05-14 | 248 -> 268 | 211.84 -> 177.54 |
Guardian of the Winds: 29% -> 14% |
| 2026-05-12 | 253 -> 248 | 211.84 | |
| 2026-05-11 | 252 -> 253 | 211.84 | |
| 2026-05-03 | 245 -> 252 | 211.48 -> 211.84 | |
| 2026-05-02 | 246 -> 245 | 211.48 | |
| 2026-04-29 | 246 | 213.68 -> 211.48 |
Martenho's New Year's Eve tournament: 71% -> 57% |
| 2026-04-27 | 247 -> 246 | 213.68 | |
| 2026-04-26 | 248 -> 247 | 213.68 | |
| 2026-04-19 | 236 -> 248 | 213.68 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 435 |
|
14/24 | 100% | 1.60 | CRR | Spring Martenho get-together 2026 | Ufa | |
| 2 | 333 |
|
11/16 | 57% | 1.20 | CRR | Martenho's New Year's Eve tournament | Ufa | |
| 3 | 851 |
|
8/48 | 14% | 2.80 | RR | Guardian of the Winds | Yekaterinburg |