Vakhonin Stepan

From Saint Petersburg, Russia

EMA: 15990444

Player page

Internal rating (RR)

Rating date Oct. 10, 2025 (latest changes Oct. 9, 2025).

83 place (454.66).

max_coefficients = (4.10 * 1 + 3.75 * 1 + 3.50 * 1 + 3.45 * 1) = 14.8

p1 = (94.74 * 3.85 * 0.86 + 830.51 * 3.25 * 1 + 978.26 * 2.10 * 0.43 + 610.39 * 3.45 * 1 + 0) / (3.85 * 0.86 + 3.25 * 1 + 2.10 * 0.43 + 3.45 * 1 + 1) = 504.0464642755251

p2 = (830.51 * 3.25 * 1 + 610.39 * 3.45 * 1 + 978.26 * 2.10 * 0.43 + 94.74 * 3.85 * 0.86) / max_coefficients = 405.277027027027

score = 504.0464642755251 * 0.5 + 405.277027027027 * 0.5 = 454.6617456512761

Rating changes

Show

all results
Date Place Points Reason
2025-10-09 84 -> 83 454.66
2025-10-04 86 -> 84 454.66
2025-09-30 81 -> 86 470.40 -> 454.66

Seihoku spring tournament 2024: 57% -> 43%
2025-09-14 82 -> 81 470.40
2025-09-12 83 -> 82 470.40
2025-09-10 85 -> 83 470.40
2025-09-03 70 -> 85 510.78 -> 470.40

SPB Riichi Open 2023: 14% -> 0%
2025-09-01 76 -> 70 494.13 -> 510.78

SPB Riichi Open 2024: 100% -> 86%
2025-08-31 101 -> 76 399.57 -> 494.13

SPB Riichi Open 2025: 0% -> 100%
2025-08-09 100 -> 101 399.57

Tournaments

# Base rank Date Place Power Coefficient Type Tournament City
1 610 2025-08-31 31/78 100% 3.45 RR SPB Riichi Open 2025 Saint Petersburg
2 831 2025-02-16 11/60 100% 3.25 RR White Wolf Cup Saint Petersburg
3 95 2024-09-01 87/96 86% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
4 978 2024-03-30 🥈 2/47 43% 2.10 RR Seihoku spring tournament 2024 Saint Petersburg
5 953 2023-09-03 6/108 0% 4.00 RR SPB Riichi Open 2023 Saint Petersburg
6 198 2022-06-12 90/112 0% 4.05 RR Moscow Riichi 2022 Moscow
7 173 2021-11-28 63/76 0% 3.45 RR Saint Petersburg Open 2021 Saint Petersburg
8 222 2019-11-24 50/64 0% 3.45 EMA Saint Petersburg Open 2019 Saint Petersburg
9 0 2019-06-02 40/40 0% 2.90 RR Summer Cup 2019 Saint Petersburg