Ryabov Aleksandr

From Moscow, Russia

Player page

Internal rating (RR)

Rating date Sept. 3, 2024 (latest changes Sept. 3, 2024).

32 place (591.00).

max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.65 * 1 + 4 * 0.86) = 15.5284

p1 = (436.78 * 3.75 * 0.71 + 831.78 * 4 * 0.86 + 925.23 * 4.60 * 1 + 352.94 * 3.05 * 1 + 221.05 * 3.85 * 1) / (3.75 * 0.71 + 4 * 0.86 + 4.60 * 1 + 3.05 * 1 + 3.85 * 1) = 579.6106951628682

p2 = (925.23 * 4.60 * 1 + 831.78 * 4 * 0.86 + 436.78 * 3.75 * 0.71 + 352.94 * 3.05 * 1) / max_coefficients = 602.3911027536642

score = 579.6106951628682 * 0.5 + 602.3911027536642 * 0.5 = 591.0008989582661

Rating changes

Show

Date Place Points Reason
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 19 642.56 -> 641.86

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

2024-08-04 13 -> 19 655.69 -> 642.56
2024-07-14 11 -> 13 655.69
2024-06-11 12 -> 11 667.33 -> 655.69

Money can not buy tenpai: 100% -> 86%

2024-06-09 9 -> 12 667.33
2024-05-12 25 -> 9 505.43 -> 667.33

X Russian Championship: 0% -> 100%

2024-05-06 28 -> 25 499.81 -> 505.43
2024-04-12 23 -> 28 514.59 -> 499.81

Moscow Riichi 2022: 29% -> 14%

Tournaments

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