Ryabov Aleksandr

From Moscow, Russia

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Internal rating (RR)

Rating date Jan. 22, 2025 (latest changes Jan. 7, 2025).

26 place (609.95).

max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85

p1 = (436.78 * 3.75 * 0.43 + 831.78 * 4 * 0.57 + 925.23 * 4.60 * 1 + 221.05 * 3.85 * 1 + 853.93 * 3.75 * 1 + 161.29 * 3.10 * 1 + 352.94 * 3.05 * 1) / (3.75 * 0.43 + 4 * 0.57 + 4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.10 * 1 + 3.05 * 1) = 561.482453912156

p2 = (925.23 * 4.60 * 1 + 853.93 * 3.75 * 1 + 831.78 * 4 * 0.57 + 352.94 * 3.05 * 1) / max_coefficients = 658.4164037854889

score = 561.482453912156 * 0.5 + 658.4164037854889 * 0.5 = 609.9494288488224

Rating changes

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all results
Date Place Points Reason
2025-01-07 22 -> 26 642.35 -> 609.95

Moscow Open Riichi Marathon: 0% -> 100%
2025-01-03 18 -> 22 660.33 -> 642.35

SPB Riichi Open 2023: 71% -> 57%
2024-12-11 20 -> 18 657.75 -> 660.33

Money can not buy tenpai: 57% -> 43%
2024-11-06 21 -> 20 657.75
2024-11-03 19 -> 21 675.54 -> 657.75

SPB Riichi Open 2023: 86% -> 71%
2024-10-13 32 -> 19 585.71 -> 675.54

Moscow Riichi 2024: 0% -> 100%
2024-10-11 32 591.00 -> 585.71

Money can not buy tenpai: 71% -> 57%
2024-09-03 29 -> 32 599.04 -> 591.00

SPB Riichi Open 2023: 100% -> 86%
2024-09-01 19 -> 29 641.86 -> 599.04

SPB Riichi Open 2024: 0% -> 100%
2024-08-11 20 -> 19 642.56 -> 641.86

Money can not buy tenpai: 86% -> 71%

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 161 2025-01-07 27/32 100% 3.10 RR Moscow Open Riichi Marathon
2 854 2024-10-13 14/90 100% 3.75 RR Moscow Riichi 2024
3 221 2024-09-01 75/96 100% 3.85 RR SPB Riichi Open 2024
4 925 2024-05-12 9/108 100% 4.60 RR X Russian Championship
5 353 2024-03-10 34/52 100% 3.05 RR Agari Spring Tournament 2024
6 832 2023-09-03 19/108 57% 4.00 RR SPB Riichi Open 2023
7 437 2023-06-11 50/88 43% 3.75 RR Money can not buy tenpai
8 595 2022-06-12 46/112 0% 4.05 RR Moscow Riichi 2022