Grebnev Grigorii
From Saint Petersburg, Russia
Common russian riichi rating (CRR)
Rating date June 29, 2026 (latest changes June 29, 2026).
229 place (254.25).
how we calculated rating score
max_coefficients = (4.71 * 1 + 3.90 * 1 + 4.10 * 0.86 + 3.45 * 1) = 15.574109999999997
p1 = (484.21 * 3.85 * 0.29 + 593.22 * 3.25 * 0.57 + 666.67 * 2 * 0.86 + 40.54 * 3.40 * 1 + 0) / (3.85 * 0.29 + 3.25 * 0.57 + 2 * 0.86 + 3.40 * 1 + 1) = 321.3336280390842
p2 = (666.67 * 2 * 0.86 + 593.22 * 3.25 * 0.57 + 484.21 * 3.85 * 0.29 + 40.54 * 3.40 * 1) / max_coefficients = 187.16189881797422
score = 321.3336280390842 * 0.5 + 187.16189881797422 * 0.5 = 254.2477634285292
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-06-16 | 221 -> 229 | 269.71 -> 254.25 |
White Wolf Cup: 71% -> 57% |
| 2026-06-15 | 221 | 266.00 -> 269.71 | |
| 2026-06-14 | 195 -> 221 | 285.96 -> 266.00 |
Tonpu-master: 100% -> 86% |
| 2026-06-13 | 196 -> 195 | 285.96 | |
| 2026-06-04 | 200 -> 196 | 285.96 | |
| 2026-05-31 | 195 -> 200 | 285.96 | |
| 2026-05-25 | 196 -> 195 | 285.96 | |
| 2026-05-19 | 198 -> 196 | 285.96 | |
| 2026-05-17 | 195 -> 198 | 285.96 | |
| 2026-05-12 | 202 -> 195 | 285.96 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 41 |
|
72/75 | 100% | 3.40 | RR | White Wolf Cup 2026 | Saint Petersburg | |
| 2 | 667 |
|
7/19 | 86% | 2.00 | CRR | Tonpu-master | Saint Petersburg | |
| 3 | 593 |
|
25/60 | 57% | 3.25 | RR | White Wolf Cup | Saint Petersburg | |
| 4 | 484 |
|
50/96 | 29% | 3.85 | RR | SPB Riichi Open 2024 | Saint Petersburg | |
| 5 | 239 |
|
36/47 | 0% | 2.10 | RR | Seihoku spring tournament 2024 | Saint Petersburg | |
| 6 | 701 |
|
33/108 | 0% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg | |
| 7 | 355 |
|
21/32 | 0% | 1.80 | CRR | Earth cup | Saint Petersburg | |
| 8 | 282 |
|
29/40 | 0% | 1.80 | CRR | Sun tournament | Saint Petersburg |