Ryabov Aleksandr

From Moscow, Russia

Player page

Internal rating (RR)

Rating date Sept. 19, 2023 (latest changes Sept. 19, 2023).

31 place (489.58).

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

p1 = (594.59 * 4.05 * 0.71 + 436.78 * 3.75 * 1 + 831.78 * 4 * 1 + 0 + 0) / (4.05 * 0.71 + 3.75 * 1 + 4 * 1 + 1 + 1) = 528.7657158179106

p2 = (831.78 * 4 * 1 + 594.59 * 4.05 * 0.71 + 436.78 * 3.75 * 1) / max_coefficients = 450.3926620882758

score = 528.7657158179106 * 0.5 + 450.3926620882758 * 0.5 = 489.5791889530932

Rating changes

Show

all results
Date Place Points Reason
2023-09-03 74 -> 31 304.86 -> 489.58

SPB Riichi Open 2023: 0% -> 100%
2023-09-01 74 304.86

Tournaments

# Base rank Date Place Power Coefficient Type Tournament City
1 832 2023-09-03 19/108 100% 4.00 RR SPB Riichi Open 2023 Saint Petersburg
2 437 2023-06-11 50/88 100% 3.75 RR Money can not buy tenpai Perm
3 595 2022-06-12 46/112 71% 4.05 RR Moscow Riichi 2022 Moscow