Bretslavskaya Natalya
From Tyumen, Russia
Common russian riichi rating (CRR)
Rating date Feb. 16, 2025 (latest changes Feb. 16, 2025).
27 place (645.60).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (724.14 * 3.75 * 0.29 + 740.74 * 2.30 * 0.71 + 222.22 * 2.30 * 1 + 887.85 * 4.60 * 1 + 617.02 * 2.80 * 1 + 721.52 * 3.65 * 1) / (3.75 * 0.29 + 2.30 * 0.71 + 2.30 * 1 + 4.60 * 1 + 2.80 * 1 + 3.65 * 1) = 681.5873617622718
p2 = (887.85 * 4.60 * 1 + 721.52 * 3.65 * 1 + 617.02 * 2.80 * 1 + 740.74 * 2.30 * 0.71) / max_coefficients = 609.6069400630915
score = 681.5873617622718 * 0.5 + 609.6069400630915 * 0.5 = 645.5971509126816
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-02-16 | 24 -> 27 | 645.60 | |
| 2025-02-11 | 24 | 646.28 -> 645.60 |
Money can not buy tenpai: 43% -> 29% |
| 2025-01-26 | 23 -> 24 | 646.28 | |
| 2025-01-05 | 20 -> 23 | 654.52 -> 646.28 |
Finding Dora: 86% -> 71% |
| 2025-01-03 | 21 -> 20 | 654.52 | |
| 2024-12-11 | 21 | 658.02 -> 654.52 |
Money can not buy tenpai: 57% -> 43% |
| 2024-12-01 | 22 -> 21 | 658.02 | |
| 2024-11-05 | 20 -> 22 | 663.33 -> 658.02 |
Finding Dora: 100% -> 86% |
| 2024-11-03 | 22 -> 20 | 663.33 | |
| 2024-10-13 | 19 -> 22 | 669.96 -> 663.33 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 722 |
|
23/80 | 100% | 3.65 | RR | Riichi over Volga |
| 2 | 617 |
|
19/48 | 100% | 2.80 | RR | Guardian of the Winds |
| 3 | 888 |
|
13/108 | 100% | 4.60 | RR | X Russian Championship |
| 4 | 222 |
|
22/28 | 100% | 2.30 | CRR | Chasing Kan |
| 5 | 741 |
|
8/28 | 71% | 2.30 | CRR | Finding Dora |
| 6 | 724 |
|
25/88 | 29% | 3.75 | RR | Money can not buy tenpai |