Grebnev Grigorii
From Saint Petersburg, Russia
Common russian riichi rating (CRR)
Rating date Oct. 11, 2024 (latest changes Oct. 11, 2024).
98 place (388.54).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.65 * 1 + 4 * 0.86) = 15.5284
p1 = (354.84 * 1.80 * 0.43 + 700.93 * 4 * 0.86 + 239.13 * 2.10 * 1 + 484.21 * 3.85 * 1 + 0) / (1.80 * 0.43 + 4 * 0.86 + 2.10 * 1 + 3.85 * 1 + 1) = 452.31069751423337
p2 = (700.93 * 4 * 0.86 + 484.21 * 3.85 * 1 + 239.13 * 2.10 * 1 + 354.84 * 1.80 * 0.43) / max_coefficients = 324.77331856469436
score = 452.31069751423337 * 0.5 + 324.77331856469436 * 0.5 = 388.5420080394639
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2024-10-11 | 100 -> 98 | 388.54 | |
| 2024-09-15 | 98 -> 100 | 388.54 | |
| 2024-09-06 | 99 -> 98 | 388.54 | |
| 2024-09-03 | 95 -> 99 | 401.28 -> 388.54 |
SPB Riichi Open 2023: 100% -> 86% |
| 2024-09-01 | 113 -> 95 | 318.73 -> 401.28 |
SPB Riichi Open 2024: 0% -> 100% |
| 2024-08-27 | 114 -> 113 | 318.73 |
Sun tournament: 14% -> 0% |
| 2024-08-26 | 107 -> 114 | 344.00 -> 318.73 | |
| 2024-08-25 | 107 | 345.54 -> 344.00 |
Earth cup: 57% -> 43% |
| 2024-08-11 | 109 -> 107 | 344.24 -> 345.54 | |
| 2024-08-04 | 104 -> 109 | 349.12 -> 344.24 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 484 |
|
50/96 | 100% | 3.85 | RR | SPB Riichi Open 2024 | Saint Petersburg | |
| 2 | 239 |
|
36/47 | 100% | 2.10 | RR | Seihoku spring tournament 2024 | Saint Petersburg | |
| 3 | 701 |
|
33/108 | 86% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg | |
| 4 | 355 |
|
21/32 | 43% | 1.80 | CRR | Earth cup | Saint Petersburg | |
| 5 | 282 |
|
29/40 | 0% | 1.80 | CRR | Sun tournament | Saint Petersburg |