Ryabov Aleksandr

From Moscow, Russia

Player page

Internal rating (RR)

Rating date July 3, 2025 (latest changes July 3, 2025).

55 place (542.27).

max_coefficients = (4.10 * 1 + 4.60 * 0.86 + 3.85 * 1 + 3.75 * 1) = 15.64266

p1 = (831.78 * 4 * 0.14 + 352.94 * 3.05 * 0.71 + 925.23 * 4.60 * 0.86 + 221.05 * 3.85 * 1 + 853.93 * 3.75 * 1 + 161.29 * 3.10 * 1) / (4 * 0.14 + 3.05 * 0.71 + 4.60 * 0.86 + 3.85 * 1 + 3.75 * 1 + 3.10 * 1) = 543.0695040354168

p2 = (925.23 * 4.60 * 0.86 + 853.93 * 3.75 * 1 + 221.05 * 3.85 * 1 + 352.94 * 3.05 * 0.71) / max_coefficients = 541.4744039696574

score = 543.0695040354168 * 0.5 + 541.4744039696574 * 0.5 = 542.2719540025371

Rating changes

Show

all results
Date Place Points Reason
2025-07-03 55 552.67 -> 542.27

SPB Riichi Open 2023: 29% -> 14%
2025-06-15 51 -> 55 560.86 -> 552.67
2025-06-11 51 559.19 -> 560.86

Money can not buy tenpai: 14% -> 0%
2025-06-08 50 -> 51 559.19
2025-05-30 51 -> 50 559.19
2025-05-12 46 -> 51 573.02 -> 559.19

X Russian Championship: 100% -> 86%
2025-05-10 46 572.96 -> 573.02

Agari Spring Tournament 2024: 86% -> 71%
2025-05-03 37 -> 46 591.85 -> 572.96

SPB Riichi Open 2023: 43% -> 29%
2025-04-26 38 -> 37 591.85
2025-04-11 38 590.19 -> 591.85

Money can not buy tenpai: 29% -> 14%

Tournaments

# Base rank Date Place Power Coefficient Type Tournament City
1 161 2025-01-07 27/32 100% 3.10 RR Moscow Open Riichi Marathon Moscow
2 854 2024-10-13 14/90 100% 3.75 RR Moscow Riichi 2024 Moscow
3 221 2024-09-01 75/96 100% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
4 925 2024-05-12 9/108 86% 4.60 RR X Russian Championship Perm
5 353 2024-03-10 34/52 71% 3.05 RR Agari Spring Tournament 2024 Moscow
6 832 2023-09-03 19/108 14% 4.00 RR SPB Riichi Open 2023 Saint Petersburg
7 437 2023-06-11 50/88 0% 3.75 RR Money can not buy tenpai Perm
8 595 2022-06-12 46/112 0% 4.05 RR Moscow Riichi 2022 Moscow