Ratnikova Anna

From Samara, Russia

EMA: 15990370

Player page

Common russian riichi rating (CRR)

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

33 place (474.88).

max_coefficients = (4.20 * 1 + 3.75 * 1 + 4.05 * 0.71 + 2.80 * 1) = 13.642914999999999

p1 = (585.59 * 4.05 * 0.71 + 600 * 4.20 * 1 + 551.72 * 3.75 * 1 + 0 + 0) / (4.05 * 0.71 + 4.20 * 1 + 3.75 * 1 + 1 + 1) = 489.2207104072557

p2 = (600 * 4.20 * 1 + 551.72 * 3.75 * 1 + 585.59 * 4.05 * 0.71) / max_coefficients = 460.5335443341837

score = 489.2207104072557 * 0.5 + 460.5335443341837 * 0.5 = 474.8771273707197

Rating changes

Show

all results
Date Place Points Reason
2023-08-19 34 -> 33 474.88
2023-08-12 33 -> 34 479.50 -> 474.88

Moscow Riichi 2022: 86% -> 71%
2023-07-28 35 -> 33 479.50
2023-06-12 36 -> 35 483.75 -> 479.50

Moscow Riichi 2022: 100% -> 86%
2023-06-11 54 -> 36 397.91 -> 483.75

Money can not buy tenpai: 0% -> 100%
2023-05-20 55 -> 54 391.49 -> 397.91
2023-05-06 54 -> 55 391.49
2023-05-01 53 -> 54 391.49
2023-04-19 54 -> 53 391.49
2023-03-28 57 -> 54 391.49

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 552 2023-06-11 40/88 100% 3.75 RR Money can not buy tenpai
2 600 2022-11-06 31/76 100% 4.20 RR IX Russian Riichi Championship
3 586 2022-06-12 47/112 71% 4.05 RR Moscow Riichi 2022
4 198 2018-11-18 74/92 0% 3.80 EMA VII Russian Riichi Championship "Aki Shanten"
5 455 2017-02-26 7/12 0% 1.10 CRR Mahjong tournament at the Intellectual Games Festival 2017