Grebnev Grigorii
From Saint Petersburg, Russia
Common russian riichi rating (CRR)
Rating date Nov. 20, 2023 (latest changes Nov. 20, 2023).
90 place (343.86).
how we calculated rating score
max_coefficients = (4 * 1 + 3.75 * 1 + 4.20 * 0.86 + 2.80 * 1) = 14.149820000000002
p1 = (282.05 * 1.80 * 0.71 + 354.84 * 1.80 * 1 + 700.93 * 4 * 1 + 0 + 0) / (1.80 * 0.71 + 1.80 * 1 + 4 * 1 + 1 + 1) = 418.7980285590386
p2 = (700.93 * 4 * 1 + 354.84 * 1.80 * 1 + 282.05 * 1.80 * 0.71) / max_coefficients = 268.9143748825073
score = 418.7980285590386 * 0.5 + 268.9143748825073 * 0.5 = 343.8562017207729
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2023-11-20 | 93 -> 90 | 343.86 | |
| 2023-11-06 | 93 | 343.86 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 701 |
|
33/108 | 100% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg | |
| 2 | 355 |
|
21/32 | 100% | 1.80 | CRR | Earth cup | Saint Petersburg | |
| 3 | 282 |
|
29/40 | 71% | 1.80 | CRR | Sun tournament | Saint Petersburg |