Bretslavskaya Natalya
From Tyumen, Russia
Common russian riichi rating (CRR)
Rating date Nov. 5, 2025 (latest changes Nov. 5, 2025).
74 place (498.47).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95
p1 = (222.22 * 2.30 * 0.29 + 887.85 * 4.60 * 0.57 + 617.02 * 2.80 * 0.71 + 721.52 * 3.65 * 0.71 + 225.81 * 2.40 * 1) / (2.30 * 0.29 + 4.60 * 0.57 + 2.80 * 0.71 + 3.65 * 0.71 + 2.40 * 1) = 596.2263857643972
p2 = (887.85 * 4.60 * 0.57 + 721.52 * 3.65 * 0.71 + 617.02 * 2.80 * 0.71 + 225.81 * 2.40 * 1) / max_coefficients = 400.7230769230769
score = 596.2263857643972 * 0.5 + 400.7230769230769 * 0.5 = 498.47473134373706
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-11-04 | 73 -> 74 | 509.82 -> 498.47 | |
| 2025-11-01 | 75 -> 73 | 509.09 -> 509.82 | |
| 2025-10-25 | 77 -> 75 | 503.41 -> 509.09 |
Chasing Kan: 43% -> 29% |
| 2025-10-22 | 78 -> 77 | 503.41 | |
| 2025-10-13 | 77 -> 78 | 497.06 -> 503.41 | |
| 2025-10-09 | 78 -> 77 | 497.06 | |
| 2025-10-04 | 74 -> 78 | 512.77 -> 497.06 |
Riichi over Volga: 86% -> 71% |
| 2025-09-14 | 73 -> 74 | 521.47 -> 512.77 |
Guardian of the Winds: 86% -> 71% |
| 2025-09-12 | 63 -> 73 | 548.84 -> 521.47 |
X Russian Championship: 71% -> 57% |
| 2025-09-10 | 64 -> 63 | 548.84 |
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 | 71% | 3.65 | RR | Riichi over Volga | Samara | |
| 3 | 617 |
|
19/48 | 71% | 2.80 | RR | Guardian of the Winds | Yekaterinburg | |
| 4 | 888 |
|
13/108 | 57% | 4.60 | RR | X Russian Championship | Perm | |
| 5 | 222 |
|
22/28 | 29% | 2.30 | CRR | Chasing Kan | Yekaterinburg | |
| 6 | 741 |
|
8/28 | 0% | 2.30 | CRR | Finding Dora | Yekaterinburg | |
| 7 | 724 |
|
25/88 | 0% | 3.75 | RR | Money can not buy tenpai | Perm |