Grebnev Grigorii
From Saint Petersburg, Russia
Common russian riichi rating (CRR)
Rating date March 31, 2025 (latest changes March 30, 2025).
98 place (404.63).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (700.93 * 4 * 0.43 + 239.13 * 2.10 * 0.86 + 484.21 * 3.85 * 1 + 593.22 * 3.25 * 1 + 0) / (4 * 0.43 + 2.10 * 0.86 + 3.85 * 1 + 3.25 * 1 + 1) = 467.03334076669216
p2 = (593.22 * 3.25 * 1 + 484.21 * 3.85 * 1 + 700.93 * 4 * 0.43 + 239.13 * 2.10 * 0.86) / max_coefficients = 342.22523659305995
score = 467.03334076669216 * 0.5 + 342.22523659305995 * 0.5 = 404.629288679876
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-03-30 | 98 | 404.02 -> 404.63 |
Seihoku spring tournament 2024: 100% -> 86% |
| 2025-03-23 | 97 -> 98 | 404.02 | |
| 2025-03-05 | 98 -> 97 | 404.02 | |
| 2025-03-03 | 94 -> 98 | 422.14 -> 404.02 |
SPB Riichi Open 2023: 57% -> 43% |
| 2025-03-02 | 93 -> 94 | 422.14 | |
| 2025-02-27 | 94 -> 93 | 422.14 | |
| 2025-02-25 | 87 -> 94 | 440.96 -> 422.14 |
Earth cup: 14% -> 0% |
| 2025-02-16 | 123 -> 87 | 341.90 -> 440.96 |
White Wolf Cup: 0% -> 100% |
| 2025-02-11 | 122 -> 123 | 341.90 | |
| 2025-02-02 | 118 -> 122 | 341.90 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 593 |
|
25/60 | 100% | 3.25 | RR | White Wolf Cup |
| 2 | 484 |
|
50/96 | 100% | 3.85 | RR | SPB Riichi Open 2024 |
| 3 | 239 |
|
36/47 | 86% | 2.10 | RR | Seihoku spring tournament 2024 |
| 4 | 701 |
|
33/108 | 43% | 4.00 | RR | SPB Riichi Open 2023 |
| 5 | 355 |
|
21/32 | 0% | 1.80 | CRR | Earth cup |
| 6 | 282 |
|
29/40 | 0% | 1.80 | CRR | Sun tournament |