Vakhonin Stepan
From Saint Petersburg, Russia
EMA: 15990444
Internal rating (RR)
Rating date April 1, 2025 (latest changes March 30, 2025).
68 place (481.81).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (953.27 * 4 * 0.43 + 978.26 * 2.10 * 0.86 + 94.74 * 3.85 * 1 + 830.51 * 3.25 * 1 + 0) / (4 * 0.43 + 2.10 * 0.86 + 3.85 * 1 + 3.25 * 1 + 1) = 556.120854359837
p2 = (830.51 * 3.25 * 1 + 978.26 * 2.10 * 0.86 + 953.27 * 4 * 0.43 + 94.74 * 3.85 * 1) / max_coefficients = 407.50536277602527
score = 556.120854359837 * 0.5 + 407.50536277602527 * 0.5 = 481.8131085679312
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-03-30 | 63 -> 68 | 496.39 -> 481.81 |
Seihoku spring tournament 2024: 100% -> 86% |
| 2025-03-10 | 66 -> 63 | 496.39 | |
| 2025-03-03 | 59 -> 66 | 522.41 -> 496.39 |
SPB Riichi Open 2023: 57% -> 43% |
| 2025-03-02 | 57 -> 59 | 522.41 | |
| 2025-02-16 | 93 -> 57 | 369.65 -> 522.41 |
White Wolf Cup: 0% -> 100% |
| 2025-02-11 | 95 -> 93 | 369.65 | |
| 2025-02-02 | 94 -> 95 | 369.65 | |
| 2025-01-26 | 93 -> 94 | 369.65 | |
| 2025-01-07 | 91 -> 93 | 369.65 | |
| 2025-01-03 | 82 -> 91 | 400.17 -> 369.65 |
SPB Riichi Open 2023: 71% -> 57% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 831 |
|
11/60 | 100% | 3.25 | RR | White Wolf Cup |
| 2 | 95 |
|
87/96 | 100% | 3.85 | RR | SPB Riichi Open 2024 |
| 3 | 978 |
|
2/47 | 86% | 2.10 | RR | Seihoku spring tournament 2024 |
| 4 | 953 |
|
6/108 | 43% | 4.00 | RR | SPB Riichi Open 2023 |
| 5 | 198 |
|
90/112 | 0% | 4.05 | RR | Moscow Riichi 2022 |
| 6 | 173 |
|
63/76 | 0% | 3.45 | RR | Saint Petersburg Open 2021 |
| 7 | 222 |
|
50/64 | 0% | 3.45 | EMA | Saint Petersburg Open 2019 |
| 8 | 0 |
|
40/40 | 0% | 2.90 | RR | Summer Cup 2019 |