Grebnev Grigorii
From Saint Petersburg, Russia
Common russian riichi rating (CRR)
Rating date March 9, 2024 (latest changes March 9, 2024).
80 place (351.35).
how we calculated rating score
max_coefficients = (4 * 1 + 3.75 * 1 + 2.90 * 1 + 4.20 * 0.57) = 13.04988
p1 = (282.05 * 1.80 * 0.43 + 354.84 * 1.80 * 0.86 + 700.93 * 4 * 1 + 0 + 0) / (1.80 * 0.43 + 1.80 * 0.86 + 4 * 1 + 1 + 1) = 429.23603543791023
p2 = (700.93 * 4 * 1 + 354.84 * 1.80 * 0.86 + 282.05 * 1.80 * 0.43) / max_coefficients = 273.4722464880903
score = 429.23603543791023 * 0.5 + 273.4722464880903 * 0.5 = 351.3541409630003
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2024-03-06 | 82 -> 80 | 345.34 -> 351.35 | |
| 2024-02-27 | 82 | 345.79 -> 345.34 |
Sun tournament: 57% -> 43% |
| 2024-02-25 | 78 -> 82 | 348.11 -> 345.79 |
Earth cup: 100% -> 86% |
| 2024-02-12 | 79 -> 78 | 348.11 | |
| 2024-01-20 | 81 -> 79 | 348.11 | |
| 2024-01-06 | 82 -> 81 | 342.36 -> 348.11 | |
| 2024-01-05 | 83 -> 82 | 342.36 | |
| 2024-01-03 | 84 -> 83 | 342.36 | |
| 2023-12-27 | 84 | 342.91 -> 342.36 |
Sun tournament: 71% -> 57% |
| 2023-12-19 | 85 -> 84 | 342.91 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 701 |
|
33/108 | 100% | 4.00 | RR | SPB Riichi Open 2023 |
| 2 | 355 |
|
21/32 | 86% | 1.80 | CRR | Earth cup |
| 3 | 282 |
|
29/40 | 43% | 1.80 | CRR | Sun tournament |