Chirkova Lyudmila
From Samara, Russia
Internal rating (RR)
Rating date April 24, 2025 (latest changes April 11, 2025).
28 place (623.00).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (712.64 * 3.75 * 0.14 + 457.94 * 4 * 0.43 + 439.25 * 4.60 * 1 + 1000 * 2.80 * 1 + 506.33 * 3.65 * 1 + 736.84 * 3.85 * 1 + 880.95 * 2.60 * 1 + 372.55 * 3.05 * 1) / (3.75 * 0.14 + 4 * 0.43 + 4.60 * 1 + 2.80 * 1 + 3.65 * 1 + 3.85 * 1 + 2.60 * 1 + 3.05 * 1) = 618.3802607643986
p2 = (736.84 * 3.85 * 1 + 1000 * 2.80 * 1 + 880.95 * 2.60 * 1 + 439.25 * 4.60 * 1) / max_coefficients = 627.6264984227129
score = 618.3802607643986 * 0.5 + 627.6264984227129 * 0.5 = 623.0033795935558
Rating changes
Date | Place | Points | Reason |
---|---|---|---|
2025-04-11 | 29 -> 28 | 624.08 -> 623.00 |
Money can not buy tenpai: 29% -> 14% |
2025-03-10 | 30 -> 29 | 624.08 | |
2025-03-03 | 30 | 622.14 -> 624.08 |
SPB Riichi Open 2023: 57% -> 43% |
2025-02-16 | 27 -> 30 | 622.14 | |
2025-02-11 | 26 -> 27 | 623.19 -> 622.14 |
Money can not buy tenpai: 43% -> 29% |
2025-02-02 | 27 -> 26 | 623.19 | |
2025-01-26 | 30 -> 27 | 593.63 -> 623.19 |
Riichi On Ice: 0% -> 100% |
2025-01-07 | 27 -> 30 | 593.63 | |
2025-01-03 | 31 -> 27 | 591.98 -> 593.63 |
SPB Riichi Open 2023: 71% -> 57% |
2024-12-11 | 31 | 593.48 -> 591.98 |
Money can not buy tenpai: 57% -> 43% |
Tournaments
# | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City |
---|---|---|---|---|---|---|---|---|
1 | 881 |
|
6/43 | 100% | 2.60 | RR | Riichi On Ice | Samara |
2 | 737 |
|
26/96 | 100% | 3.85 | RR | SPB Riichi Open 2024 | Saint Petersburg |
3 | 506 |
|
40/80 | 100% | 3.65 | RR | Riichi over Volga | Samara |
4 | 1000 |
|
1/48 | 100% | 2.80 | RR | Guardian of the Winds | Yekaterinburg |
5 | 373 |
|
33/52 | 100% | 3.05 | RR | Agari Summer Tournament 2024 | Moscow |
6 | 439 |
|
61/108 | 100% | 4.60 | RR | X Russian Championship | Perm |
7 | 458 |
|
59/108 | 43% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg |
8 | 713 |
|
26/88 | 14% | 3.75 | RR | Money can not buy tenpai | Perm |
9 | 267 |
|
56/76 | 0% | 4.20 | RR | IX Russian Riichi Championship | Perm |