Bretslavskaya Natalya
From Tyumen, Russia
Internal rating (RR)
Rating date Dec. 10, 2025 (latest changes Dec. 9, 2025).
94 place (424.14).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95
p1 = (887.85 * 4.60 * 0.43 + 617.02 * 2.80 * 0.57 + 721.52 * 3.65 * 0.57 + 225.81 * 2.40 * 1 + 0) / (4.60 * 0.43 + 2.80 * 0.57 + 3.65 * 0.57 + 2.40 * 1 + 1) = 528.2469314095367
p2 = (887.85 * 4.60 * 0.43 + 721.52 * 3.65 * 0.57 + 617.02 * 2.80 * 0.57 + 225.81 * 2.40 * 1) / max_coefficients = 320.02541806020076
score = 528.2469314095367 * 0.5 + 320.02541806020076 * 0.5 = 424.13617473486875
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-12-09 | 95 -> 94 | 424.14 | |
| 2025-12-07 | 94 -> 95 | 424.14 | |
| 2025-12-04 | 88 -> 94 | 441.98 -> 424.14 |
Riichi over Volga: 71% -> 57% |
| 2025-11-14 | 83 -> 88 | 451.81 -> 441.98 |
Guardian of the Winds: 71% -> 57% |
| 2025-11-12 | 73 -> 83 | 482.00 -> 451.81 |
X Russian Championship: 57% -> 43% |
| 2025-11-10 | 74 -> 73 | 482.00 | |
| 2025-11-04 | 71 -> 74 | 491.11 -> 482.00 | |
| 2025-11-01 | 71 | 490.38 -> 491.11 | |
| 2025-10-13 | 73 -> 71 | 484.03 -> 490.38 | |
| 2025-10-09 | 74 -> 73 | 484.03 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 226 |
|
25/32 | 100% | 2.40 | RR | Riichi Maslenitsa (shrovetide) | Yekaterinburg | |
| 2 | 722 |
|
23/80 | 57% | 3.65 | RR | Riichi over Volga | Samara | |
| 3 | 617 |
|
19/48 | 57% | 2.80 | RR | Guardian of the Winds | Yekaterinburg | |
| 4 | 888 |
|
13/108 | 43% | 4.60 | RR | X Russian Championship | Perm | |
| 5 | 724 |
|
25/88 | 0% | 3.75 | RR | Money can not buy tenpai | Perm |