Ratnikova Anna

From Samara, Russia

EMA: 15990370

Player page

Internal rating (RR)

Rating date July 6, 2023 (latest changes July 6, 2023).

30 place (484.51).

max_coefficients = (4.20 * 1 + 3.75 * 1 + 4.05 * 0.86 + 3.50 * 0.71) = 13.921305

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 = 475.6515283588715

score = 493.3733842326966 * 0.5 + 475.6515283588715 * 0.5 = 484.51245629578403

Rating changes

Show

all results
Date Place Points Reason
2023-06-12 32 -> 30 488.61 -> 484.51

Moscow Riichi 2022: 100% -> 86%
2023-06-11 42 -> 32 412.74 -> 488.61

Money can not buy tenpai: 0% -> 100%
2023-05-28 43 -> 42 409.67 -> 412.74
2023-05-20 45 -> 43 402.40 -> 409.67
2023-05-05 45 402.40

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