Nizhurin Sergei
From Moscow, Russia
Common russian riichi rating (CRR)
Rating date Aug. 26, 2025 (latest changes Aug. 26, 2025).
247 place (143.02).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.85 * 1 + 3.75 * 1 + 3.50 * 1) = 15.2
p1 = (28.04 * 4 * 0.14 + 806.45 * 1.80 * 0.71 + 0 + 0 + 0) / (4 * 0.14 + 1.80 * 0.71 + 1 + 1 + 1) = 216.76884879378423
p2 = (806.45 * 1.80 * 0.71 + 28.04 * 4 * 0.14) / max_coefficients = 69.27105263157895
score = 216.76884879378423 * 0.5 + 69.27105263157895 * 0.5 = 143.01995071268158
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-08-26 | 249 -> 247 | 143.02 | |
| 2025-08-25 | 250 -> 249 | 143.02 | |
| 2025-08-04 | 251 -> 250 | 142.68 -> 143.02 | |
| 2025-08-03 | 245 -> 251 | 142.68 | |
| 2025-07-26 | 243 -> 245 | 142.68 | |
| 2025-07-19 | 238 -> 243 | 164.25 -> 142.68 |
"Green Dragon" in the Secret Chamber: 86% -> 71% |
| 2025-07-13 | 235 -> 238 | 164.25 | |
| 2025-07-12 | 235 | 163.48 -> 164.25 | |
| 2025-07-03 | 238 -> 235 | 153.03 -> 163.48 |
SPB Riichi Open 2023: 29% -> 14% |
| 2025-06-22 | 240 -> 238 | 153.03 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 806 |
|
7/32 | 71% | 1.80 | CRR | "Green Dragon" in the Secret Chamber | Korolyov | |
| 2 | 28 |
|
105/108 | 14% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg |