Ratnikova Anna

From Samara, Russia

EMA: 15990370

Player page

Internal rating (RR)

Rating date July 28, 2023 (latest changes July 28, 2023).

29 place (493.38).

max_coefficients = (4.20 * 1 + 3.75 * 1 + 4.05 * 0.86 + 3.50 * 0.57) = 13.421155

p1 = (585.59 * 4.05 * 0.86 + 600 * 4.20 * 1 + 551.72 * 3.75 * 1 + 0 + 0) / (4.05 * 0.86 + 4.20 * 1 + 3.75 * 1 + 1 + 1) = 493.3733842326966

p2 = (600 * 4.20 * 1 + 551.72 * 3.75 * 1 + 585.59 * 4.05 * 0.86) / max_coefficients = 493.3770603200693

score = 493.3733842326966 * 0.5 + 493.3770603200693 * 0.5 = 493.37522227638294

Rating changes

Show

all results
Date Place Points Reason
2023-07-28 30 -> 29 493.38
2023-07-20 30 484.51 -> 493.38
2023-06-19 30 484.51

Tournaments

# Base rank Date Place Power Coefficient Type Tournament City
1 552 2023-06-11 40/88 100% 3.75 RR Money can not buy tenpai Perm
2 600 2022-11-06 31/76 100% 4.20 RR IX Russian Riichi Championship Perm
3 586 2022-06-12 47/112 86% 4.05 RR Moscow Riichi 2022 Moscow
4 198 2018-11-18 74/92 0% 3.80 EMA VII Russian Riichi Championship "Aki Shanten" Perm