Ivanov Grigorii
From Korolyov, Russia
Common russian riichi rating (CRR)
Rating date Nov. 3, 2026 (latest changes Nov. 3, 2026).
153 place (371.17).
how we calculated rating score
max_coefficients = (4.71 * 1 + 3.90 * 1 + 3.40 * 1 + 3.40 * 1) = 15.41
p1 = (368.42 * 1.50 * 0.57 + 561.40 * 3.90 * 1 + 578.95 * 2.25 * 1 + 333.33 * 2.45 * 1 + 0) / (1.50 * 0.57 + 3.90 * 1 + 2.25 * 1 + 2.45 * 1 + 1) = 442.2392441499077
p2 = (561.40 * 3.90 * 1 + 578.95 * 2.25 * 1 + 333.33 * 2.45 * 1 + 368.42 * 1.50 * 0.57) / max_coefficients = 300.0999351070733
score = 442.2392441499077 * 0.5 + 300.0999351070733 * 0.5 = 371.1695896284905
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-11-03 | 154 -> 153 | 371.17 | |
| 2026-11-01 | 153 -> 154 | 371.17 | |
| 2026-10-31 | 152 -> 153 | 371.17 | |
| 2026-10-27 | 151 -> 152 | 371.17 | |
| 2026-10-26 | 152 -> 151 | 371.17 | |
| 2026-10-24 | 150 -> 152 | 371.17 | |
| 2026-10-17 | 149 -> 150 | 371.17 | |
| 2026-10-15 | 150 -> 149 | 371.17 | |
| 2026-10-13 | 154 -> 150 | 371.17 | |
| 2026-09-29 | 155 -> 154 | 371.17 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 333 |
|
19/28 | 100% | 2.45 | RR | Hatiko under the sakura | Korolyov | |
| 2 | 579 |
|
9/20 | 100% | 2.25 | RR | Winter Hatiko | Korolyov | |
| 3 | 561 |
|
26/58 | 100% | 3.90 | RR | XI Russian Championship | Moscow | |
| 4 | 368 |
|
13/20 | 57% | 1.50 | CRR | HaTiKo | Korolyov |