Ryabov Aleksandr

From Moscow, Russia

Player page

Internal rating (RR)

Rating date Sept. 6, 2023 (latest changes Sept. 6, 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

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all results
Date Place Points Reason
2023-09-03 73 -> 31 304.86 -> 489.58

SPB Riichi Open 2023: 0% -> 100%
2023-08-19 74 -> 73 304.86
2023-08-12 69 -> 74 319.00 -> 304.86

Moscow Riichi 2022: 86% -> 71%
2023-07-28 72 -> 69 319.00
2023-07-20 72 314.05 -> 319.00
2023-07-06 74 -> 72 314.05
2023-06-19 75 -> 74 314.05
2023-06-12 73 -> 75 326.83 -> 314.05

Moscow Riichi 2022: 100% -> 86%
2023-06-11 73 326.83

Money can not buy tenpai: 0% -> 100%

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
3 595 2022-06-12 46/112 71% 4.05 RR Moscow Riichi 2022