Bretslavskaya Natalya
From Tyumen, Russia
Common russian riichi rating (CRR)
Rating date July 10, 2025 (latest changes July 10, 2025).
52 place (579.59).
how we calculated rating score
max_coefficients = (4.10 * 1 + 4.60 * 0.86 + 3.85 * 1 + 3.75 * 1) = 15.64266
p1 = (740.74 * 2.30 * 0.29 + 222.22 * 2.30 * 0.57 + 887.85 * 4.60 * 0.86 + 617.02 * 2.80 * 1 + 721.52 * 3.65 * 1 + 225.81 * 2.40 * 1) / (2.30 * 0.29 + 2.30 * 0.57 + 4.60 * 0.86 + 2.80 * 1 + 3.65 * 1 + 2.40 * 1) = 621.9477255132251
p2 = (887.85 * 4.60 * 0.86 + 721.52 * 3.65 * 1 + 617.02 * 2.80 * 1 + 225.81 * 2.40 * 1) / max_coefficients = 537.2251266728292
score = 621.9477255132251 * 0.5 + 537.2251266728292 * 0.5 = 579.5864260930272
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-07-10 | 53 -> 52 | 579.59 | |
| 2025-07-05 | 47 -> 53 | 586.90 -> 579.59 |
Finding Dora: 43% -> 29% |
| 2025-06-25 | 53 -> 47 | 582.61 -> 586.90 |
Chasing Kan: 71% -> 57% |
| 2025-06-15 | 48 -> 53 | 590.75 -> 582.61 | |
| 2025-06-11 | 48 | 592.56 -> 590.75 |
Money can not buy tenpai: 14% -> 0% |
| 2025-05-12 | 44 -> 48 | 604.55 -> 592.56 |
X Russian Championship: 100% -> 86% |
| 2025-05-10 | 43 -> 44 | 604.55 | |
| 2025-05-05 | 43 | 613.30 -> 604.55 |
Finding Dora: 57% -> 43% |
| 2025-05-03 | 35 -> 43 | 613.30 | |
| 2025-04-26 | 34 -> 35 | 613.30 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City |
|---|---|---|---|---|---|---|---|---|
| 1 | 226 |
|
25/32 | 100% | 2.40 | RR | Riichi Maslenitsa (shrovetide) | Yekaterinburg |
| 2 | 722 |
|
23/80 | 100% | 3.65 | RR | Riichi over Volga | Samara |
| 3 | 617 |
|
19/48 | 100% | 2.80 | RR | Guardian of the Winds | Yekaterinburg |
| 4 | 888 |
|
13/108 | 86% | 4.60 | RR | X Russian Championship | Perm |
| 5 | 222 |
|
22/28 | 57% | 2.30 | CRR | Chasing Kan | Yekaterinburg |
| 6 | 741 |
|
8/28 | 29% | 2.30 | CRR | Finding Dora | Yekaterinburg |
| 7 | 724 |
|
25/88 | 0% | 3.75 | RR | Money can not buy tenpai | Perm |