Grebnev Grigorii
From Saint Petersburg, Russia
Common russian riichi rating (CRR)
Rating date April 4, 2026 (latest changes April 4, 2026).
167 place (312.20).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95
p1 = (484.21 * 3.85 * 0.43 + 593.22 * 3.25 * 0.86 + 666.67 * 2 * 1 + 40.54 * 3.40 * 1 + 0) / (3.85 * 0.43 + 3.25 * 0.86 + 2 * 1 + 3.40 * 1 + 1) = 362.0103389864139
p2 = (593.22 * 3.25 * 0.86 + 666.67 * 2 * 1 + 484.21 * 3.85 * 0.43 + 40.54 * 3.40 * 1) / max_coefficients = 262.38327759197324
score = 362.0103389864139 * 0.5 + 262.38327759197324 * 0.5 = 312.19680828919354
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-04-02 | 168 -> 167 | 312.20 | |
| 2026-03-30 | 161 -> 168 | 328.24 -> 312.20 |
Seihoku spring tournament 2024: 14% -> 0% |
| 2026-03-15 | 162 -> 161 | 328.24 | |
| 2026-03-14 | 155 -> 162 | 328.24 | |
| 2026-03-12 | 156 -> 155 | 328.24 | |
| 2026-03-07 | 154 -> 156 | 328.24 | |
| 2026-03-01 | 146 -> 154 | 339.46 -> 328.24 |
SPB Riichi Open 2024: 57% -> 43% |
| 2026-02-25 | 147 -> 146 | 339.46 | |
| 2026-02-23 | 126 -> 147 | 386.68 -> 339.46 |
White Wolf Cup 2026: 0% -> 100% |
| 2026-02-16 | 123 -> 126 | 398.43 -> 386.68 |
White Wolf Cup: 100% -> 86% |
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 | 86% | 3.25 | RR | White Wolf Cup | Saint Petersburg | |
| 4 | 484 |
|
50/96 | 43% | 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 |