Chirkova Lyudmila
From Samara, Russia
Common russian riichi rating (CRR)
Rating date Sept. 5, 2025 (latest changes Sept. 5, 2025).
57 place (575.66).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.75 * 1 + 3.50 * 1 + 3.45 * 1) = 14.8
p1 = (439.25 * 4.60 * 0.71 + 372.55 * 3.05 * 0.71 + 1000 * 2.80 * 0.86 + 506.33 * 3.65 * 0.86 + 736.84 * 3.85 * 0.86 + 880.95 * 2.60 * 1 + 514.29 * 3.50 * 1 + 164.18 * 4.10 * 1) / (4.60 * 0.71 + 3.05 * 0.71 + 2.80 * 0.86 + 3.65 * 0.86 + 3.85 * 0.86 + 2.60 * 1 + 3.50 * 1 + 4.10 * 1) = 548.4893860473755
p2 = (736.84 * 3.85 * 0.86 + 1000 * 2.80 * 0.86 + 880.95 * 2.60 * 1 + 514.29 * 3.50 * 1) / max_coefficients = 602.8256756756756
score = 548.4893860473755 * 0.5 + 602.8256756756756 * 0.5 = 575.6575308615256
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-09-03 | 59 -> 57 | 574.63 -> 575.66 |
SPB Riichi Open 2023: 14% -> 0% |
| 2025-09-01 | 52 -> 59 | 582.07 -> 574.63 |
SPB Riichi Open 2024: 100% -> 86% |
| 2025-08-31 | 49 -> 52 | 582.07 | |
| 2025-08-25 | 50 -> 49 | 582.07 | |
| 2025-08-09 | 50 | 580.59 -> 582.07 |
Agari Summer Tournament 2024: 86% -> 71% |
| 2025-08-04 | 51 -> 50 | 578.75 -> 580.59 |
Riichi over Volga: 100% -> 86% |
| 2025-08-03 | 50 -> 51 | 578.75 | |
| 2025-07-30 | 51 -> 50 | 578.75 | |
| 2025-07-19 | 50 -> 51 | 578.75 | |
| 2025-07-14 | 45 -> 50 | 595.14 -> 578.75 |
Guardian of the Winds: 100% -> 86% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 164 |
|
57/68 | 100% | 4.10 | RR | 13 bloody tiles | Perm | |
| 2 | 514 |
|
35/71 | 100% | 3.50 | RR | Riichi over The Volga 2025 | Samara | |
| 3 | 881 |
|
6/43 | 100% | 2.60 | RR | Riichi On Ice | Samara | |
| 4 | 737 |
|
26/96 | 86% | 3.85 | RR | SPB Riichi Open 2024 | Saint Petersburg | |
| 5 | 506 |
|
40/80 | 86% | 3.65 | RR | Riichi over Volga | Samara | |
| 6 | 1000 |
|
🥇 | 1/48 | 86% | 2.80 | RR | Guardian of the Winds | Yekaterinburg |
| 7 | 373 |
|
33/52 | 71% | 3.05 | RR | Agari Summer Tournament 2024 | Moscow | |
| 8 | 439 |
|
61/108 | 71% | 4.60 | RR | X Russian Championship | Perm | |
| 9 | 458 |
|
59/108 | 0% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg | |
| 10 | 713 |
|
26/88 | 0% | 3.75 | RR | Money can not buy tenpai | Perm | |
| 11 | 267 |
|
56/76 | 0% | 4.20 | RR | IX Russian Riichi Championship | Perm |