Grebnev Grigorii
From Saint Petersburg, Russia
Internal rating (RR)
Rating date Oct. 13, 2024 (latest changes Oct. 13, 2024).
100 place (360.04).
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 * 0.86 + 239.13 * 2.10 * 1 + 484.21 * 3.85 * 1 + 0 + 0) / (4 * 0.86 + 2.10 * 1 + 3.85 * 1 + 1 + 1) = 419.1678970681291
p2 = (700.93 * 4 * 0.86 + 484.21 * 3.85 * 1 + 239.13 * 2.10 * 1) / max_coefficients = 300.9123028391167
score = 419.1678970681291 * 0.5 + 300.9123028391167 * 0.5 = 360.04009995362287
Rating changes
Date | Place | Points | Reason |
---|---|---|---|
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 | |
2024-07-14 | 91 -> 96 | 292.85 | |
2024-06-11 | 98 -> 91 | 288.98 -> 292.85 | |
2024-06-09 | 88 -> 98 | 288.98 |
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 | 86% | 4.00 | RR | SPB Riichi Open 2023 |