Ratnikova Anna

From Samara, Russia

EMA: 15990370

Player page

Internal rating (RR)

Rating date June 13, 2024 (latest changes June 12, 2024).

37 place (514.09).

max_coefficients = (4.60 * 1 + 4 * 1 + 3.75 * 0.86 + 3.05 * 1) = 14.864125000000001

p1 = (551.72 * 3.75 * 0.86 + 439.25 * 4 * 1 + 600 * 4.20 * 0.43 + 644.86 * 4.60 * 1 + 0) / (3.75 * 0.86 + 4 * 1 + 4.20 * 0.43 + 4.60 * 1 + 1) = 518.4496359545087

p2 = (644.86 * 4.60 * 1 + 551.72 * 3.75 * 0.86 + 439.25 * 4 * 1 + 600 * 4.20 * 0.43) / max_coefficients = 509.7340072153591

score = 518.4496359545087 * 0.5 + 509.7340072153591 * 0.5 = 514.0918215849339

Rating changes

Show

Date Place Points Reason
2024-06-11 37 534.35 -> 514.09

Money can not buy tenpai: 100% -> 86%

2024-06-09 34 -> 37 534.35
2024-05-12 36 -> 34 438.94 -> 534.35

X Russian Championship: 0% -> 100%

2024-05-06 36 451.24 -> 438.94

IX Russian Riichi Championship: 57% -> 43%

2024-04-12 36 466.60 -> 451.24

Moscow Riichi 2022: 29% -> 14%

2024-03-30 33 -> 36 466.60
2024-03-20 34 -> 33 466.60
2024-03-10 25 -> 34 504.29 -> 466.60
2024-03-06 24 -> 25 508.89 -> 504.29

IX Russian Riichi Championship: 71% -> 57%

2024-02-12 22 -> 24 512.28 -> 508.89

Moscow Riichi 2022: 43% -> 29%

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 645 2024-05-12 39/108 100% 4.60 RR X Russian Championship
2 439 2023-09-03 61/108 100% 4.00 RR SPB Riichi Open 2023
3 552 2023-06-11 40/88 86% 3.75 RR Money can not buy tenpai
4 600 2022-11-06 31/76 43% 4.20 RR IX Russian Riichi Championship
5 586 2022-06-12 47/112 0% 4.05 RR Moscow Riichi 2022
6 198 2018-11-18 74/92 0% 3.80 EMA VII Russian Riichi Championship "Aki Shanten"