Grebnev Grigorii
From Saint Petersburg, Russia
Common russian riichi rating (CRR)
Rating date May 12, 2024 (latest changes May 12, 2024).
97 place (346.36).
how we calculated rating score
max_coefficients = (4.60 * 1 + 4 * 1 + 3.75 * 1 + 3.05 * 1) = 15.399999999999999
p1 = (282.05 * 1.80 * 0.29 + 354.84 * 1.80 * 0.71 + 700.93 * 4 * 1 + 239.13 * 2.10 * 1 + 0) / (1.80 * 0.29 + 1.80 * 0.71 + 4 * 1 + 2.10 * 1 + 1) = 439.0101123595505
p2 = (700.93 * 4 * 1 + 239.13 * 2.10 * 1 + 354.84 * 1.80 * 0.71 + 282.05 * 1.80 * 0.29) / max_coefficients = 253.7136363636364
score = 439.0101123595505 * 0.5 + 253.7136363636364 * 0.5 = 346.36187436159344
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2024-05-12 | 76 -> 97 | 362.10 -> 346.36 | |
| 2024-04-27 | 76 | 362.55 -> 362.10 |
Sun tournament: 43% -> 29% |
| 2024-04-25 | 76 | 364.79 -> 362.55 |
Earth cup: 86% -> 71% |
| 2024-03-30 | 82 -> 76 | 344.87 -> 364.79 |
Seihoku spring tournament 2024: 0% -> 100% |
| 2024-03-20 | 85 -> 82 | 344.87 | |
| 2024-03-10 | 80 -> 85 | 351.35 -> 344.87 | |
| 2024-03-06 | 82 -> 80 | 345.34 -> 351.35 | |
| 2024-02-27 | 82 | 345.79 -> 345.34 |
Sun tournament: 57% -> 43% |
| 2024-02-25 | 78 -> 82 | 348.11 -> 345.79 |
Earth cup: 100% -> 86% |
| 2024-02-12 | 79 -> 78 | 348.11 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 239 |
|
36/47 | 100% | 2.10 | RR | Seihoku spring tournament 2024 |
| 2 | 701 |
|
33/108 | 100% | 4.00 | RR | SPB Riichi Open 2023 |
| 3 | 355 |
|
21/32 | 71% | 1.80 | CRR | Earth cup |
| 4 | 282 |
|
29/40 | 29% | 1.80 | CRR | Sun tournament |