Ratnikova Anna

From Samara, Russia

EMA: 15990370

Player page

Common russian riichi rating (CRR)

Rating date Sept. 20, 2023 (latest changes Sept. 20, 2023).

29 place (524.58).

max_coefficients = (4.20 * 1 + 4 * 1 + 3.75 * 1 + 4.05 * 0.71) = 14.842915

p1 = (585.59 * 4.05 * 0.71 + 600 * 4.20 * 1 + 551.72 * 3.75 * 1 + 439.25 * 4 * 1 + 0) / (4.05 * 0.71 + 4.20 * 1 + 3.75 * 1 + 4 * 1 + 1) = 507.4842603144687

p2 = (600 * 4.20 * 1 + 551.72 * 3.75 * 1 + 439.25 * 4 * 1 + 585.59 * 4.05 * 0.71) / max_coefficients = 541.6745969373267

score = 507.4842603144687 * 0.5 + 541.6745969373267 * 0.5 = 524.5794286258977

Rating changes

Show

all results
Date Place Points Reason
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%
2023-06-11 54 -> 36 397.91 -> 483.75

Money can not buy tenpai: 0% -> 100%

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 71% 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