Ivanov Grigorii
From Korolyov, Russia
Common russian riichi rating (CRR)
Rating date Nov. 5, 2025 (latest changes Nov. 5, 2025).
191 place (254.93).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95
p1 = (368.42 * 1.50 * 1 + 561.40 * 3.90 * 1 + 0 + 0 + 0) / (1.50 * 1 + 3.90 * 1 + 1 + 1 + 1) = 326.44047619047615
p2 = (561.40 * 3.90 * 1 + 368.42 * 1.50 * 1) / max_coefficients = 183.4180602006689
score = 326.44047619047615 * 0.5 + 183.4180602006689 * 0.5 = 254.92926819557252
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-11-05 | 192 -> 191 | 254.93 | |
| 2025-11-04 | 192 | 254.93 |
XI Russian Championship: 0% -> 100% |