Grebnev Grigorii
From Saint Petersburg, Russia
Common russian riichi rating (CRR)
Rating date Nov. 3, 2024 (latest changes Nov. 3, 2024).
113 place (364.07).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (354.84 * 1.80 * 0.29 + 700.93 * 4 * 0.71 + 239.13 * 2.10 * 1 + 484.21 * 3.85 * 1 + 0) / (1.80 * 0.29 + 4 * 0.71 + 2.10 * 1 + 3.85 * 1 + 1) = 440.9812177734545
p2 = (700.93 * 4 * 0.71 + 484.21 * 3.85 * 1 + 239.13 * 2.10 * 1 + 354.84 * 1.80 * 0.29) / max_coefficients = 287.16529968454256
score = 440.9812177734545 * 0.5 + 287.16529968454256 * 0.5 = 364.07325872899855
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2024-11-03 | 106 -> 113 | 383.52 -> 364.07 |
SPB Riichi Open 2023: 86% -> 71% |
| 2024-10-25 | 106 | 385.25 -> 383.52 |
Earth cup: 43% -> 29% |
| 2024-10-22 | 107 -> 106 | 385.25 | |
| 2024-10-18 | 108 -> 107 | 385.25 | |
| 2024-10-13 | 97 -> 108 | 388.54 -> 385.25 | |
| 2024-10-11 | 99 -> 97 | 388.54 | |
| 2024-09-15 | 97 -> 99 | 388.54 | |
| 2024-09-06 | 98 -> 97 | 388.54 | |
| 2024-09-03 | 95 -> 98 | 401.28 -> 388.54 |
SPB Riichi Open 2023: 100% -> 86% |
| 2024-09-01 | 112 -> 95 | 318.73 -> 401.28 |
SPB Riichi Open 2024: 0% -> 100% |
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 |
| 4 | 355 |
|
21/32 | 29% | 1.80 | CRR | Earth cup |
| 5 | 282 |
|
29/40 | 0% | 1.80 | CRR | Sun tournament |