Vakhonin Stepan

From Saint Petersburg, Russia

EMA: 15990444

Player page

Internal rating (RR)

Rating date May 7, 2026 (latest changes May 7, 2026).

21 place (671.77).

max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.45 * 1 + 3.40 * 1) = 14.85

p1 = (94.74 * 3.85 * 0.29 + 830.51 * 3.25 * 0.71 + 610.39 * 3.45 * 1 + 932.43 * 3.40 * 1 + 966.67 * 1.70 * 1) / (3.85 * 0.29 + 3.25 * 0.71 + 3.45 * 1 + 3.40 * 1 + 1.70 * 1) = 747.7517287005217

p2 = (932.43 * 3.40 * 1 + 610.39 * 3.45 * 1 + 830.51 * 3.25 * 0.71 + 966.67 * 1.70 * 1) / max_coefficients = 595.7872053872054

score = 747.7517287005217 * 0.5 + 595.7872053872054 * 0.5 = 671.7694670438635

Rating changes

Show

all results
Date Place Points Reason
2026-05-03 24 -> 21 669.78 -> 671.77
2026-05-01 28 -> 24 655.43 -> 669.78

SPB Riichi Open 2024: 43% -> 29%
2026-04-16 25 -> 28 670.31 -> 655.43

White Wolf Cup: 86% -> 71%
2026-04-11 47 -> 25 574.30 -> 670.31

Seihoku spring tournament 2026: 0% -> 100%
2026-04-05 46 -> 47 574.30
2026-04-04 45 -> 46 574.30
2026-03-30 37 -> 45 610.60 -> 574.30

Seihoku spring tournament 2024: 14% -> 0%
2026-03-26 38 -> 37 610.60
2026-03-12 39 -> 38 610.60
2026-03-01 41 -> 39 597.03 -> 610.60

SPB Riichi Open 2024: 57% -> 43%

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 967 2026-04-11 🥈 2/31 100% 1.70 RR Seihoku spring tournament 2026 Saint Petersburg
2 932 2026-02-23 6/75 100% 3.40 RR White Wolf Cup 2026 Saint Petersburg
3 610 2025-08-31 31/78 100% 3.45 RR SPB Riichi Open 2025 Saint Petersburg
4 831 2025-02-16 11/60 71% 3.25 RR White Wolf Cup Saint Petersburg
5 95 2024-09-01 87/96 29% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
6 978 2024-03-30 🥈 2/47 0% 2.10 RR Seihoku spring tournament 2024 Saint Petersburg
7 953 2023-09-03 6/108 0% 4.00 RR SPB Riichi Open 2023 Saint Petersburg
8 198 2022-06-12 90/112 0% 4.05 RR Moscow Riichi 2022 Moscow
9 173 2021-11-28 63/76 0% 3.45 RR Saint Petersburg Open 2021 Saint Petersburg
10 222 2019-11-24 50/64 0% 3.45 EMA Saint Petersburg Open 2019 Saint Petersburg
11 0 2019-06-02 40/40 0% 2.90 RR Summer Cup 2019 Saint Petersburg