Ivanov Anton
From Ufa, Russia
Common russian riichi rating (CRR)
Rating date Nov. 20, 2025 (latest changes Nov. 19, 2025).
202 place (210.78).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95
p1 = (851.06 * 2.80 * 0.57 + 333.33 * 1.20 * 1 + 0 + 0 + 0) / (2.80 * 0.57 + 1.20 * 1 + 1 + 1 + 1) = 303.73349977241065
p2 = (851.06 * 2.80 * 0.57 + 333.33 * 1.20 * 1) / max_coefficients = 117.83478260869566
score = 303.73349977241065 * 0.5 + 117.83478260869566 * 0.5 = 210.78414119055316
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-11-19 | 203 -> 202 | 210.78 | |
| 2025-11-14 | 196 -> 203 | 239.83 -> 210.78 |
Guardian of the Winds: 71% -> 57% |
| 2025-11-12 | 197 -> 196 | 239.83 | |
| 2025-11-04 | 192 -> 197 | 243.03 -> 239.83 | |
| 2025-11-01 | 190 -> 192 | 242.77 -> 243.03 | |
| 2025-10-25 | 191 -> 190 | 242.77 | |
| 2025-10-13 | 191 | 240.55 -> 242.77 | |
| 2025-10-09 | 192 -> 191 | 240.55 | |
| 2025-09-30 | 193 -> 192 | 240.55 | |
| 2025-09-19 | 194 -> 193 | 240.55 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 333 |
|
11/16 | 100% | 1.20 | CRR | Martenho's New Year's Eve tournament | Ufa | |
| 2 | 851 |
|
8/48 | 57% | 2.80 | RR | Guardian of the Winds | Yekaterinburg |