Grebnev Grigorii
From Saint Petersburg, Russia
Common russian riichi rating (CRR)
Rating date May 17, 2026 (latest changes May 17, 2026).
194 place (285.96).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.45 * 1 + 3.40 * 1) = 14.85
p1 = (484.21 * 3.85 * 0.29 + 593.22 * 3.25 * 0.71 + 666.67 * 2 * 1 + 40.54 * 3.40 * 1 + 0) / (3.85 * 0.29 + 3.25 * 0.71 + 2 * 1 + 3.40 * 1 + 1) = 344.23942769986417
p2 = (593.22 * 3.25 * 0.71 + 666.67 * 2 * 1 + 484.21 * 3.85 * 0.29 + 40.54 * 3.40 * 1) / max_coefficients = 227.67138047138047
score = 344.23942769986417 * 0.5 + 227.67138047138047 * 0.5 = 285.9554040856223
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-05-17 | 196 -> 194 | 285.96 | |
| 2026-05-12 | 203 -> 196 | 285.96 | |
| 2026-05-11 | 200 -> 203 | 285.96 | |
| 2026-05-03 | 199 -> 200 | 285.19 -> 285.96 | |
| 2026-05-01 | 189 -> 199 | 297.82 -> 285.19 |
SPB Riichi Open 2024: 43% -> 29% |
| 2026-04-26 | 190 -> 189 | 297.82 | |
| 2026-04-19 | 180 -> 190 | 297.82 | |
| 2026-04-16 | 170 -> 180 | 312.20 -> 297.82 |
White Wolf Cup: 86% -> 71% |
| 2026-04-05 | 167 -> 170 | 312.20 | |
| 2026-04-02 | 168 -> 167 | 312.20 |
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 | 100% | 2.00 | CRR | Tonpu-master | Saint Petersburg | |
| 3 | 593 |
|
25/60 | 71% | 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 |