Nemchinova Alena
From Samara, Russia
Internal rating (RR)
Rating date Jan. 22, 2025 (latest changes Jan. 7, 2025).
45 place (524.52).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (710.28 * 4 * 0.57 + 420.56 * 4.60 * 1 + 893.62 * 2.80 * 1 + 405.06 * 3.65 * 1 + 494.38 * 3.75 * 1) / (4 * 0.57 + 4.60 * 1 + 2.80 * 1 + 3.65 * 1 + 3.75 * 1) = 549.734279159058
p2 = (893.62 * 2.80 * 1 + 420.56 * 4.60 * 1 + 494.38 * 3.75 * 1 + 710.28 * 4 * 0.57) / max_coefficients = 499.3097791798108
score = 549.734279159058 * 0.5 + 499.3097791798108 * 0.5 = 524.5220291694344
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-01-03 | 44 -> 45 | 539.93 -> 524.52 |
SPB Riichi Open 2023: 71% -> 57% |
| 2024-11-06 | 46 -> 44 | 539.93 | |
| 2024-11-03 | 43 -> 46 | 555.16 -> 539.93 |
SPB Riichi Open 2023: 86% -> 71% |
| 2024-10-13 | 43 | 538.61 -> 555.16 |
Moscow Riichi 2024: 0% -> 100% |
| 2024-10-11 | 45 -> 43 | 538.61 | |
| 2024-09-06 | 46 -> 45 | 538.61 | |
| 2024-09-03 | 42 -> 46 | 544.72 -> 538.61 |
SPB Riichi Open 2023: 100% -> 86% |
| 2024-09-01 | 35 -> 42 | 558.94 -> 544.72 | |
| 2024-08-11 | 39 -> 35 | 555.90 -> 558.94 | |
| 2024-08-04 | 40 -> 39 | 516.37 -> 555.90 |
Riichi over Volga: 0% -> 100% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 494 |
|
46/90 | 100% | 3.75 | RR | Moscow Riichi 2024 |
| 2 | 405 |
|
48/80 | 100% | 3.65 | RR | Riichi over Volga |
| 3 | 894 |
|
6/48 | 100% | 2.80 | RR | Guardian of the Winds |
| 4 | 421 |
|
63/108 | 100% | 4.60 | RR | X Russian Championship |
| 5 | 710 |
|
32/108 | 57% | 4.00 | RR | SPB Riichi Open 2023 |