Vakhonin Stepan

From Saint Petersburg, Russia

EMA: 15990444

Player page

Internal rating (RR)

Rating date June 16, 2026 (latest changes June 15, 2026).

28 place (657.92).

max_coefficients = (4.71 * 1 + 3.90 * 1 + 4.10 * 0.86 + 3.45 * 1) = 15.574109999999997

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 = 568.0863946639648

score = 747.7517287005217 * 0.5 + 568.0863946639648 * 0.5 = 657.9190616822432

Rating changes

Show

all results
Date Place Points Reason
2026-06-15 30 -> 28 647.62 -> 657.92
2026-06-14 21 -> 30 671.77 -> 647.62
2026-06-13 20 -> 21 671.77
2026-06-09 21 -> 20 671.77
2026-06-04 20 -> 21 671.77
2026-05-17 19 -> 20 671.77
2026-05-12 21 -> 19 671.77
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%

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