Ratnikova Anna

From Samara, Russia

EMA: 15990370

Player page

Common russian riichi rating (CRR)

Rating date Oct. 12, 2023 (latest changes Oct. 12, 2023).

32 place (513.32).

max_coefficients = (4.20 * 1 + 4 * 1 + 3.75 * 1 + 2.80 * 1) = 14.75

p1 = (439.25 * 4 * 1 + 585.59 * 4.05 * 0.57 + 600 * 4.20 * 1 + 551.72 * 3.75 * 1 + 0) / (4 * 1 + 4.05 * 0.57 + 4.20 * 1 + 3.75 * 1 + 1) = 504.5226828579608

p2 = (600 * 4.20 * 1 + 551.72 * 3.75 * 1 + 439.25 * 4 * 1 + 585.59 * 4.05 * 0.57) / max_coefficients = 522.1098305084746

score = 504.5226828579608 * 0.5 + 522.1098305084746 * 0.5 = 513.3162566832177

Rating changes

Show

all results
Date Place Points Reason
2023-10-12 29 -> 32 524.58 -> 513.32

Moscow Riichi 2022: 71% -> 57%
2023-09-20 32 -> 29 524.58
2023-09-06 30 -> 32 524.58
2023-09-03 35 -> 30 474.88 -> 524.58

SPB Riichi Open 2023: 0% -> 100%
2023-08-27 34 -> 35 474.88
2023-08-26 33 -> 34 474.88
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%

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 439 2023-09-03 61/108 100% 4.00 RR SPB Riichi Open 2023
2 552 2023-06-11 40/88 100% 3.75 RR Money can not buy tenpai
3 600 2022-11-06 31/76 100% 4.20 RR IX Russian Riichi Championship
4 586 2022-06-12 47/112 57% 4.05 RR Moscow Riichi 2022
5 198 2018-11-18 74/92 0% 3.80 EMA VII Russian Riichi Championship "Aki Shanten"
6 455 2017-02-26 7/12 0% 1.10 CRR Mahjong tournament at the Intellectual Games Festival 2017