Grebnev Grigorii
From Saint Petersburg, Russia
Internal rating (RR)
Rating date Dec. 11, 2024 (latest changes Dec. 11, 2024).
97 place (339.96).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (700.93 * 4 * 0.71 + 239.13 * 2.10 * 1 + 484.21 * 3.85 * 1 + 0 + 0) / (4 * 0.71 + 2.10 * 1 + 3.85 * 1 + 1 + 1) = 404.2758531349471
p2 = (700.93 * 4 * 0.71 + 484.21 * 3.85 * 1 + 239.13 * 2.10 * 1) / max_coefficients = 275.6523659305994
score = 404.2758531349471 * 0.5 + 275.6523659305994 * 0.5 = 339.96410953277325
Rating changes
Date | Place | Points | Reason |
---|---|---|---|
2024-12-11 | 100 -> 97 | 339.96 | |
2024-11-06 | 105 -> 100 | 339.96 | |
2024-11-03 | 100 -> 105 | 360.04 -> 339.96 |
SPB Riichi Open 2023: 86% -> 71% |
2024-10-13 | 88 -> 100 | 363.16 -> 360.04 | |
2024-10-11 | 91 -> 88 | 363.16 | |
2024-09-06 | 92 -> 91 | 363.16 | |
2024-09-03 | 85 -> 92 | 376.89 -> 363.16 |
SPB Riichi Open 2023: 100% -> 86% |
2024-09-01 | 101 -> 85 | 289.68 -> 376.89 |
SPB Riichi Open 2024: 0% -> 100% |
2024-08-11 | 102 -> 101 | 288.53 -> 289.68 | |
2024-08-04 | 96 -> 102 | 292.85 -> 288.53 |
Tournaments
# | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
---|---|---|---|---|---|---|---|
1 | 484 |
|
50/96 | 100% | 3.85 | RR | SPB Riichi Open 2024 |
2 | 239 |
|
36/47 | 100% | 2.10 | RR | Seihoku spring tournament 2024 |
3 | 701 |
|
33/108 | 71% | 4.00 | RR | SPB Riichi Open 2023 |