Ratnikova Anna

From Samara, Russia

EMA: 15990370

Player page

Internal rating (RR)

Rating date Sept. 6, 2024 (latest changes Sept. 6, 2024).

34 place (577.11).

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

p1 = (600 * 4.20 * 0.14 + 551.72 * 3.75 * 0.71 + 439.25 * 4 * 0.86 + 644.86 * 4.60 * 1 + 329.11 * 3.65 * 1 + 821.05 * 3.85 * 1) / (4.20 * 0.14 + 3.75 * 0.71 + 4 * 0.86 + 4.60 * 1 + 3.65 * 1 + 3.85 * 1) = 567.4729445443915

p2 = (821.05 * 3.85 * 1 + 644.86 * 4.60 * 1 + 439.25 * 4 * 0.86 + 551.72 * 3.75 * 0.71) / max_coefficients = 586.7442878854229

score = 567.4729445443915 * 0.5 + 586.7442878854229 * 0.5 = 577.1086162149072

Rating changes

Show

all results
Date Place Points Reason
2024-09-06 35 -> 34 577.61 -> 577.11

IX Russian Riichi Championship: 29% -> 14%
2024-09-03 34 -> 35 573.14 -> 577.61

SPB Riichi Open 2023: 100% -> 86%
2024-09-01 47 -> 34 493.72 -> 573.14

SPB Riichi Open 2024: 0% -> 100%
2024-08-11 47 501.47 -> 493.72

Money can not buy tenpai: 86% -> 71%
2024-08-04 42 -> 47 500.23 -> 501.47

Riichi over Volga: 0% -> 100%
2024-07-14 38 -> 42 500.23
2024-07-06 36 -> 38 514.09 -> 500.23

IX Russian Riichi Championship: 43% -> 29%
2024-06-11 36 534.35 -> 514.09

Money can not buy tenpai: 100% -> 86%
2024-06-09 33 -> 36 534.35
2024-05-12 36 -> 33 438.94 -> 534.35

X Russian Championship: 0% -> 100%

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 821 2024-09-01 18/96 100% 3.85 RR SPB Riichi Open 2024
2 329 2024-08-04 54/80 100% 3.65 RR Riichi over Volga
3 645 2024-05-12 39/108 100% 4.60 RR X Russian Championship
4 439 2023-09-03 61/108 86% 4.00 RR SPB Riichi Open 2023
5 552 2023-06-11 40/88 71% 3.75 RR Money can not buy tenpai
6 600 2022-11-06 31/76 14% 4.20 RR IX Russian Riichi Championship
7 586 2022-06-12 47/112 0% 4.05 RR Moscow Riichi 2022
8 198 2018-11-18 74/92 0% 3.80 EMA VII Russian Riichi Championship "Aki Shanten"