Chirkova Lyudmila
From Samara, Russia
Common russian riichi rating (CRR)
Rating date June 8, 2025 (latest changes June 8, 2025).
37 place (627.82).
how we calculated rating score
max_coefficients = (4.60 * 0.86 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.19266
p1 = (712.64 * 3.75 * 0.14 + 457.94 * 4 * 0.29 + 439.25 * 4.60 * 0.86 + 372.55 * 3.05 * 1 + 1000 * 2.80 * 1 + 506.33 * 3.65 * 1 + 736.84 * 3.85 * 1 + 880.95 * 2.60 * 1 + 514.29 * 3.50 * 1) / (3.75 * 0.14 + 4 * 0.29 + 4.60 * 0.86 + 3.05 * 1 + 2.80 * 1 + 3.65 * 1 + 3.85 * 1 + 2.60 * 1 + 3.50 * 1) = 612.2027406996875
p2 = (736.84 * 3.85 * 1 + 1000 * 2.80 * 1 + 880.95 * 2.60 * 1 + 506.33 * 3.65 * 1) / max_coefficients = 643.4304460180114
score = 612.2027406996875 * 0.5 + 643.4304460180114 * 0.5 = 627.8165933588494
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-05-12 | 39 -> 37 | 617.71 -> 627.82 |
X Russian Championship: 100% -> 86% |
| 2025-05-03 | 29 -> 39 | 623.00 -> 617.71 |
SPB Riichi Open 2023: 43% -> 29% Riichi over The Volga 2025: 0% -> 100% |
| 2025-04-26 | 28 -> 29 | 623.00 | |
| 2025-04-25 | 29 -> 28 | 623.00 | |
| 2025-04-11 | 28 -> 29 | 624.08 -> 623.00 |
Money can not buy tenpai: 29% -> 14% |
| 2025-03-26 | 29 -> 28 | 624.08 | |
| 2025-03-10 | 30 -> 29 | 624.08 | |
| 2025-03-03 | 32 -> 30 | 622.14 -> 624.08 |
SPB Riichi Open 2023: 57% -> 43% |
| 2025-02-27 | 31 -> 32 | 622.14 | |
| 2025-02-25 | 33 -> 31 | 622.14 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 514 |
|
35/71 | 100% | 3.50 | RR | Riichi over The Volga 2025 | Samara | |
| 2 | 881 |
|
6/43 | 100% | 2.60 | RR | Riichi On Ice | Samara | |
| 3 | 737 |
|
26/96 | 100% | 3.85 | RR | SPB Riichi Open 2024 | Saint Petersburg | |
| 4 | 506 |
|
40/80 | 100% | 3.65 | RR | Riichi over Volga | Samara | |
| 5 | 1000 |
|
🥇 | 1/48 | 100% | 2.80 | RR | Guardian of the Winds | Yekaterinburg |
| 6 | 373 |
|
33/52 | 100% | 3.05 | RR | Agari Summer Tournament 2024 | Moscow | |
| 7 | 439 |
|
61/108 | 86% | 4.60 | RR | X Russian Championship | Perm | |
| 8 | 458 |
|
59/108 | 29% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg | |
| 9 | 713 |
|
26/88 | 14% | 3.75 | RR | Money can not buy tenpai | Perm | |
| 10 | 267 |
|
56/76 | 0% | 4.20 | RR | IX Russian Riichi Championship | Perm |