Chirkova Lyudmila
From Samara, Russia
Internal rating (RR)
Rating date May 18, 2024 (latest changes May 12, 2024).
50 place (458.61).
how we calculated rating score
max_coefficients = (4.60 * 1 + 4 * 1 + 3.75 * 1 + 3.05 * 1) = 15.399999999999999
p1 = (266.67 * 4.20 * 0.43 + 712.64 * 3.75 * 1 + 457.94 * 4 * 1 + 439.25 * 4.60 * 1 + 0) / (4.20 * 0.43 + 3.75 * 1 + 4 * 1 + 4.60 * 1 + 1) = 462.3580539296058
p2 = (712.64 * 3.75 * 1 + 439.25 * 4.60 * 1 + 457.94 * 4 * 1 + 266.67 * 4.20 * 0.43) / max_coefficients = 454.8558441558441
score = 462.3580539296058 * 0.5 + 454.8558441558441 * 0.5 = 458.606949042725
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2024-05-12 | 46 -> 50 | 408.95 -> 458.61 |
X Russian Championship: 0% -> 100% |
| 2024-05-06 | 49 -> 46 | 406.55 -> 408.95 |
IX Russian Riichi Championship: 57% -> 43% |
| 2024-04-12 | 50 -> 49 | 406.55 | |
| 2024-03-30 | 46 -> 50 | 406.55 | |
| 2024-03-20 | 53 -> 46 | 406.55 | |
| 2024-03-10 | 43 -> 53 | 439.17 -> 406.55 | |
| 2024-03-06 | 44 -> 43 | 430.74 -> 439.17 |
IX Russian Riichi Championship: 71% -> 57% |
| 2024-02-12 | 46 -> 44 | 420.42 -> 430.74 | |
| 2024-01-06 | 46 | 413.44 -> 420.42 |
IX Russian Riichi Championship: 86% -> 71% |
| 2023-12-19 | 47 -> 46 | 413.44 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 439 |
|
61/108 | 100% | 4.60 | RR | X Russian Championship |
| 2 | 458 |
|
59/108 | 100% | 4.00 | RR | SPB Riichi Open 2023 |
| 3 | 713 |
|
26/88 | 100% | 3.75 | RR | Money can not buy tenpai |
| 4 | 267 |
|
56/76 | 43% | 4.20 | RR | IX Russian Riichi Championship |