Grebnev Grigorii
From Saint Petersburg, Russia
Common russian riichi rating (CRR)
Rating date Feb. 16, 2025 (latest changes Feb. 16, 2025).
87 place (440.96).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (354.84 * 1.80 * 0.14 + 700.93 * 4 * 0.57 + 239.13 * 2.10 * 1 + 484.21 * 3.85 * 1 + 593.22 * 3.25 * 1) / (1.80 * 0.14 + 4 * 0.57 + 2.10 * 1 + 3.85 * 1 + 3.25 * 1) = 509.9013695177138
p2 = (593.22 * 3.25 * 1 + 484.21 * 3.85 * 1 + 700.93 * 4 * 0.57 + 239.13 * 2.10 * 1) / max_coefficients = 372.0132492113565
score = 509.9013695177138 * 0.5 + 372.0132492113565 * 0.5 = 440.95730936453515
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 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 | |
| 2025-01-26 | 116 -> 118 | 341.90 | |
| 2025-01-07 | 114 -> 116 | 341.90 | |
| 2025-01-05 | 115 -> 114 | 341.90 | |
| 2025-01-04 | 114 -> 115 | 341.90 | |
| 2025-01-03 | 108 -> 114 | 362.30 -> 341.90 |
SPB Riichi Open 2023: 71% -> 57% |
| 2024-12-25 | 108 | 364.07 -> 362.30 |
Earth cup: 29% -> 14% |
| 2024-12-18 | 110 -> 108 | 364.07 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 593 |
|
25/60 | 100% | 3.25 | RR | White Wolf Cup | Saint Petersburg | |
| 2 | 484 |
|
50/96 | 100% | 3.85 | RR | SPB Riichi Open 2024 | Saint Petersburg | |
| 3 | 239 |
|
36/47 | 100% | 2.10 | RR | Seihoku spring tournament 2024 | Saint Petersburg | |
| 4 | 701 |
|
33/108 | 57% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg | |
| 5 | 355 |
|
21/32 | 14% | 1.80 | CRR | Earth cup | Saint Petersburg | |
| 6 | 282 |
|
29/40 | 0% | 1.80 | CRR | Sun tournament | Saint Petersburg |