Vakhonin Stepan

From Saint Petersburg, Russia

EMA: 15990444

Player page

Internal rating (RR)

Rating date Sept. 4, 2026 (latest changes Sept. 3, 2026).

32 place (646.89).

max_coefficients = (4.71 * 1 + 3.90 * 1 + 3.40 * 1 + 3.40 * 1) = 15.41

p1 = (830.51 * 3.25 * 0.43 + 610.39 * 3.45 * 0.86 + 932.43 * 3.40 * 1 + 966.67 * 1.70 * 1 + 612.90 * 1.80 * 1) / (3.25 * 0.43 + 3.45 * 0.86 + 3.40 * 1 + 1.70 * 1 + 1.80 * 1) = 789.2136361555544

p2 = (932.43 * 3.40 * 1 + 610.39 * 3.45 * 0.86 + 966.67 * 1.70 * 1 + 830.51 * 3.25 * 0.43) / max_coefficients = 504.56716417910445

score = 789.2136361555544 * 0.5 + 504.56716417910445 * 0.5 = 646.8904001673294

Rating changes

Show

all results
Date Place Points Reason
2026-09-03 35 -> 32 646.89
2026-09-01 40 -> 35 630.70 -> 646.89

SPB Riichi Open 2024: 14% -> 0%
2026-08-31 38 -> 40 636.68 -> 630.70

SPB Riichi Open 2025: 100% -> 86%
2026-08-16 30 -> 38 650.59 -> 636.68

White Wolf Cup: 57% -> 43%
2026-08-15 31 -> 30 648.59 -> 650.59
2026-08-04 30 -> 31 648.59
2026-08-03 31 -> 30 648.59
2026-08-02 32 -> 31 648.59
2026-07-25 28 -> 32 660.17 -> 648.59

Seihoku Summer Tournament 2026: 0% -> 100%
2026-07-12 27 -> 28 660.17

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 613 2026-07-25 13/32 100% 1.80 RR Seihoku Summer Tournament 2026 Saint Petersburg
2 967 2026-04-11 🥈 2/31 100% 1.70 RR Seihoku spring tournament 2026 Saint Petersburg
3 932 2026-02-23 6/75 100% 3.40 RR White Wolf Cup 2026 Saint Petersburg
4 610 2025-08-31 31/78 86% 3.45 RR SPB Riichi Open 2025 Saint Petersburg
5 831 2025-02-16 11/60 43% 3.25 RR White Wolf Cup Saint Petersburg
6 95 2024-09-01 87/96 0% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
7 978 2024-03-30 🥈 2/47 0% 2.10 RR Seihoku spring tournament 2024 Saint Petersburg
8 953 2023-09-03 6/108 0% 4.00 RR SPB Riichi Open 2023 Saint Petersburg
9 198 2022-06-12 90/112 0% 4.05 RR Moscow Riichi 2022 Moscow
10 173 2021-11-28 63/76 0% 3.45 RR Saint Petersburg Open 2021 Saint Petersburg
11 222 2019-11-24 50/64 0% 3.45 EMA Saint Petersburg Open 2019 Saint Petersburg
12 0 2019-06-02 40/40 0% 2.90 RR Summer Cup 2019 Saint Petersburg