Ryabov Aleksandr

From Moscow, Russia

Player page

Common russian riichi rating (CRR)

Rating date Sept. 9, 2023 (latest changes Sept. 9, 2023).

35 place (523.15).

max_coefficients = (4.20 * 1 + 4 * 1 + 3.75 * 1 + 4.05 * 0.71) = 14.842915

p1 = (347.83 * 2.80 * 1 + 594.59 * 4.05 * 0.71 + 436.78 * 3.75 * 1 + 831.78 * 4 * 1 + 0) / (2.80 * 1 + 4.05 * 0.71 + 3.75 * 1 + 4 * 1 + 1) = 530.2980734844732

p2 = (831.78 * 4 * 1 + 594.59 * 4.05 * 0.71 + 436.78 * 3.75 * 1 + 347.83 * 2.80 * 1) / max_coefficients = 516.0071320222477

score = 530.2980734844732 * 0.5 + 516.0071320222477 * 0.5 = 523.1526027533605

Rating changes

Show

all results
Date Place Points Reason
2023-09-06 33 -> 35 523.15
2023-09-03 74 -> 33 348.05 -> 523.15

SPB Riichi Open 2023: 0% -> 100%
2023-08-19 76 -> 74 348.05
2023-08-12 73 -> 76 358.88 -> 348.05

Moscow Riichi 2022: 86% -> 71%
2023-07-28 74 -> 73 358.88
2023-07-20 77 -> 74 358.88
2023-07-05 78 -> 77 358.88
2023-06-12 73 -> 78 368.80 -> 358.88

Moscow Riichi 2022: 100% -> 86%
2023-06-11 88 -> 73 296.47 -> 368.80

Money can not buy tenpai: 0% -> 100%
2023-05-20 90 -> 88 292.03 -> 296.47

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 832 2023-09-03 19/108 100% 4.00 RR SPB Riichi Open 2023
2 437 2023-06-11 50/88 100% 3.75 RR Money can not buy tenpai
3 348 2022-12-18 16/24 100% 2.80 CRR Meeting in the billiard room
4 595 2022-06-12 46/112 71% 4.05 RR Moscow Riichi 2022