Bretslavskaya Natalya
From Tyumen, Russia
Internal rating (RR)
Rating date Sept. 4, 2025 (latest changes Sept. 3, 2025).
60 place (537.78).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.75 * 1 + 3.50 * 1 + 3.45 * 1) = 14.8
p1 = (887.85 * 4.60 * 0.71 + 617.02 * 2.80 * 0.86 + 721.52 * 3.65 * 0.86 + 225.81 * 2.40 * 1 + 0) / (4.60 * 0.71 + 2.80 * 0.86 + 3.65 * 0.86 + 2.40 * 1 + 1) = 589.2554286755241
p2 = (887.85 * 4.60 * 0.71 + 721.52 * 3.65 * 0.86 + 617.02 * 2.80 * 0.86 + 225.81 * 2.40 * 1) / max_coefficients = 486.2979729729729
score = 589.2554286755241 * 0.5 + 486.2979729729729 * 0.5 = 537.7767008242485
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-09-03 | 62 -> 60 | 537.78 | |
| 2025-09-01 | 63 -> 62 | 531.38 -> 537.78 | |
| 2025-08-31 | 56 -> 63 | 531.38 | |
| 2025-08-09 | 57 -> 56 | 531.38 | |
| 2025-08-04 | 53 -> 57 | 544.03 -> 531.38 |
Riichi over Volga: 100% -> 86% |
| 2025-07-14 | 52 -> 53 | 552.41 -> 544.03 |
Guardian of the Winds: 100% -> 86% |
| 2025-07-13 | 51 -> 52 | 552.41 | |
| 2025-07-12 | 47 -> 51 | 573.25 -> 552.41 |
X Russian Championship: 86% -> 71% |
| 2025-07-03 | 48 -> 47 | 573.25 | |
| 2025-06-15 | 46 -> 48 | 581.21 -> 573.25 |
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 | 86% | 3.65 | RR | Riichi over Volga | Samara | |
| 3 | 617 |
|
19/48 | 86% | 2.80 | RR | Guardian of the Winds | Yekaterinburg | |
| 4 | 888 |
|
13/108 | 71% | 4.60 | RR | X Russian Championship | Perm | |
| 5 | 724 |
|
25/88 | 0% | 3.75 | RR | Money can not buy tenpai | Perm |