Vakhonin Stepan

From Saint Petersburg, Russia

EMA: 15990444

Player page

Common russian riichi rating (CRR)

Rating date Nov. 1, 2025 (latest changes Nov. 1, 2025).

52 place (573.65).

max_coefficients = (4.10 * 1 + 3.50 * 1 + 3.45 * 1 + 3.25 * 1) = 14.3

p1 = (978.26 * 2.10 * 0.43 + 94.74 * 3.85 * 0.71 + 830.51 * 3.25 * 1 + 888.89 * 2 * 1 + 610.39 * 3.45 * 1) / (2.10 * 0.43 + 3.85 * 0.71 + 3.25 * 1 + 2 * 1 + 3.45 * 1) = 625.4022735820679

p2 = (830.51 * 3.25 * 1 + 610.39 * 3.45 * 1 + 888.89 * 2 * 1 + 978.26 * 2.10 * 0.43) / max_coefficients = 521.9062937062936

score = 625.4022735820679 * 0.5 + 521.9062937062936 * 0.5 = 573.6542836441807

Rating changes

Show

all results
Date Place Points Reason
2025-11-01 56 -> 52 561.44 -> 573.65

SPB Riichi Open 2024: 86% -> 71%
2025-10-13 58 -> 56 553.53 -> 561.44
2025-10-04 60 -> 58 553.53
2025-09-30 54 -> 60 567.71 -> 553.53

Seihoku spring tournament 2024: 57% -> 43%
2025-09-26 53 -> 54 567.71
2025-09-15 54 -> 53 567.71
2025-09-14 55 -> 54 567.71
2025-09-12 58 -> 55 567.71
2025-09-03 58 574.80 -> 567.71

SPB Riichi Open 2023: 14% -> 0%
2025-09-01 61 -> 58 557.71 -> 574.80

SPB Riichi Open 2024: 100% -> 86%

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
2 889 2025-06-14 🥉 3/19 100% 2.00 CRR Tonpu-master Saint Petersburg
3 831 2025-02-16 11/60 100% 3.25 RR White Wolf Cup Saint Petersburg
4 95 2024-09-01 87/96 71% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
5 978 2024-03-30 🥈 2/47 43% 2.10 RR Seihoku spring tournament 2024 Saint Petersburg
6 953 2023-09-03 6/108 0% 4.00 RR SPB Riichi Open 2023 Saint Petersburg
7 696 2023-04-22 8/24 0% 1.40 CRR Fire cup 2023 Saint Petersburg
8 774 2023-02-25 8/32 0% 1.80 CRR Earth cup Saint Petersburg
9 795 2022-08-27 9/40 0% 1.80 CRR Sun tournament Saint Petersburg
10 198 2022-06-12 90/112 0% 4.05 RR Moscow Riichi 2022 Moscow
11 173 2021-11-28 63/76 0% 3.45 RR Saint Petersburg Open 2021 Saint Petersburg
12 222 2019-11-24 50/64 0% 3.45 EMA Saint Petersburg Open 2019 Saint Petersburg
13 0 2019-06-02 40/40 0% 2.90 RR Summer Cup 2019 Saint Petersburg