Ratnikova Anna

From Samara, Russia

EMA: 15990370

Player page

Internal rating (RR)

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

52 place (389.47).

max_coefficients = (4.20 * 1 + 4.05 * 1 + 3.50 * 1 + 3.45 * 0.71) = 14.214335

p1 = (585.59 * 4.05 * 1 + 600 * 4.20 * 1 + 0 + 0 + 0) / (4.05 * 1 + 4.20 * 1 + 1 + 1 + 1) = 434.81066666666663

p2 = (600 * 4.20 * 1 + 585.59 * 4.05 * 1) / max_coefficients = 344.13287712720995

score = 434.81066666666663 * 0.5 + 344.13287712720995 * 0.5 = 389.4717718969383

Rating changes

Show

all results
Date Place Points Reason
2023-02-19 54 -> 52 387.17 -> 389.47
2023-01-28 55 -> 54 383.71 -> 387.17
2023-01-06 57 -> 55 383.71
2022-12-19 57 382.11 -> 383.71
2022-11-28 57 378.31 -> 382.11
2022-11-06 57 378.31

IX Russian Riichi Championship: 0% -> 100%

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 600 2022-11-06 31/76 100% 4.20 RR IX Russian Riichi Championship
2 586 2022-06-12 47/112 100% 4.05 RR Moscow Riichi 2022
3 198 2018-11-18 74/92 0% 3.80 EMA VII Russian Riichi Championship "Aki Shanten"