Ryabov Aleksandr

From Moscow, Russia

Player page

Internal rating (RR)

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

33 place (485.07).

max_coefficients = (4.20 * 1 + 4 * 1 + 3.75 * 1 + 4.05 * 0.57) = 14.26417

p1 = (594.59 * 4.05 * 0.57 + 436.78 * 3.75 * 1 + 831.78 * 4 * 1 + 0 + 0) / (4.05 * 0.57 + 3.75 * 1 + 4 * 1 + 1 + 1) = 525.6076464439742

p2 = (831.78 * 4 * 1 + 436.78 * 3.75 * 1 + 594.59 * 4.05 * 0.57) / max_coefficients = 444.5418135089528

score = 525.6076464439742 * 0.5 + 444.5418135089528 * 0.5 = 485.0747299764635

Rating changes

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all results
Date Place Points Reason
2023-10-12 30 -> 33 489.58 -> 485.07

Moscow Riichi 2022: 71% -> 57%
2023-09-20 32 -> 30 489.58
2023-09-03 74 -> 32 304.86 -> 489.58

SPB Riichi Open 2023: 0% -> 100%
2023-08-19 75 -> 74 304.86
2023-08-12 70 -> 75 319.00 -> 304.86

Moscow Riichi 2022: 86% -> 71%
2023-07-28 73 -> 70 319.00
2023-07-20 73 314.05 -> 319.00
2023-07-06 75 -> 73 314.05
2023-06-19 76 -> 75 314.05
2023-06-12 74 -> 76 326.83 -> 314.05

Moscow Riichi 2022: 100% -> 86%

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 57% 4.05 RR Moscow Riichi 2022