Grebnev Grigorii
From Saint Petersburg, Russia
Common russian riichi rating (CRR)
Rating date Dec. 27, 2023 (latest changes Dec. 27, 2023).
84 place (342.36).
how we calculated rating score
max_coefficients = (4 * 1 + 3.75 * 1 + 4.20 * 0.86 + 2.90 * 1) = 14.249820000000001
p1 = (282.05 * 1.80 * 0.57 + 354.84 * 1.80 * 1 + 700.93 * 4 * 1 + 0 + 0) / (1.80 * 0.57 + 1.80 * 1 + 4 * 1 + 1 + 1) = 422.78320715136846
p2 = (700.93 * 4 * 1 + 354.84 * 1.80 * 1 + 282.05 * 1.80 * 0.57) / max_coefficients = 261.936642006706
score = 422.78320715136846 * 0.5 + 261.936642006706 * 0.5 = 342.3599245790372
Rating changes
Date | Place | Points | Reason |
---|---|---|---|
2023-12-27 | 84 | 342.91 -> 342.36 |
Sun tournament: 71% -> 57% |
2023-12-19 | 85 -> 84 | 342.91 | |
2023-12-12 | 90 -> 85 | 342.91 | |
2023-11-28 | 95 -> 90 | 342.91 | |
2023-11-26 | 91 -> 95 | 343.86 -> 342.91 | |
2023-11-20 | 94 -> 91 | 343.86 | |
2023-11-06 | 97 -> 94 | 338.39 -> 343.86 | |
2023-11-05 | 92 -> 97 | 338.39 | |
2023-11-03 | 93 -> 92 | 338.39 | |
2023-10-27 | 95 -> 93 | 338.96 -> 338.39 |
Sun tournament: 86% -> 71% |
Tournaments
# | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
---|---|---|---|---|---|---|---|
1 | 701 |
|
33/108 | 100% | 4.00 | RR | SPB Riichi Open 2023 |
2 | 355 |
|
21/32 | 100% | 1.80 | CRR | Earth cup |
3 | 282 |
|
29/40 | 57% | 1.80 | CRR | Sun tournament |