Grishchenko Aleksandra
From Korolyov, Russia
Internal rating (RR)
Rating date Jan. 22, 2025 (latest changes Jan. 7, 2025).
20 place (656.98).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (326.09 * 2.10 * 1 + 822.43 * 4.60 * 1 + 547.37 * 3.85 * 1 + 797.75 * 3.75 * 1 + 549.02 * 3.05 * 1) / (2.10 * 1 + 4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.05 * 1) = 647.9198847262248
p2 = (822.43 * 4.60 * 1 + 797.75 * 3.75 * 1 + 547.37 * 3.85 * 1 + 549.02 * 3.05 * 1) / max_coefficients = 666.0334384858044
score = 647.9198847262248 * 0.5 + 666.0334384858044 * 0.5 = 656.9766616060147
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-01-07 | 17 -> 20 | 656.98 | |
| 2025-01-03 | 19 -> 17 | 656.98 | |
| 2024-12-11 | 21 -> 19 | 656.98 | |
| 2024-11-06 | 22 -> 21 | 656.98 | |
| 2024-11-03 | 23 -> 22 | 656.98 | |
| 2024-10-13 | 40 -> 23 | 548.17 -> 656.98 |
Moscow Riichi 2024: 0% -> 100% |
| 2024-10-11 | 41 -> 40 | 548.17 | |
| 2024-09-03 | 46 -> 41 | 538.73 -> 548.17 | |
| 2024-09-01 | 58 -> 46 | 462.12 -> 538.73 |
SPB Riichi Open 2024: 0% -> 100% |
| 2024-08-11 | 59 -> 58 | 459.99 -> 462.12 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 798 |
|
19/90 | 100% | 3.75 | RR | Moscow Riichi 2024 |
| 2 | 547 |
|
44/96 | 100% | 3.85 | RR | SPB Riichi Open 2024 |
| 3 | 822 |
|
20/108 | 100% | 4.60 | RR | X Russian Championship |
| 4 | 326 |
|
32/47 | 100% | 2.10 | RR | Seihoku spring tournament 2024 |
| 5 | 549 |
|
24/52 | 100% | 3.05 | RR | Agari Spring Tournament 2024 |