Ratnikova Anna

From Samara, Russia

EMA: 15990370

Player page

Internal rating (RR)

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

26 place (516.12).

max_coefficients = (4 * 1 + 3.75 * 1 + 4.20 * 0.86 + 4.05 * 0.43) = 13.085650000000001

p1 = (585.59 * 4.05 * 0.43 + 600 * 4.20 * 0.86 + 551.72 * 3.75 * 1 + 439.25 * 4 * 1 + 0) / (4.05 * 0.43 + 4.20 * 0.86 + 3.75 * 1 + 4 * 1 + 1) = 497.1265081838609

p2 = (600 * 4.20 * 0.86 + 551.72 * 3.75 * 1 + 439.25 * 4 * 1 + 585.59 * 4.05 * 0.43) / max_coefficients = 535.1167118179073

score = 497.1265081838609 * 0.5 + 535.1167118179073 * 0.5 = 516.1216100008842

Rating changes

Show

all results
Date Place Points Reason
2023-12-12 23 -> 26 518.93 -> 516.12

Moscow Riichi 2022: 57% -> 43%
2023-11-28 24 -> 23 518.93
2023-11-20 25 -> 24 518.93
2023-11-06 25 522.21 -> 518.93

IX Russian Riichi Championship: 100% -> 86%
2023-10-12 24 -> 25 524.58 -> 522.21

Moscow Riichi 2022: 71% -> 57%
2023-09-20 25 -> 24 524.58
2023-09-03 28 -> 25 489.22 -> 524.58

SPB Riichi Open 2023: 0% -> 100%
2023-08-19 30 -> 28 489.22
2023-08-12 30 493.38 -> 489.22

Moscow Riichi 2022: 86% -> 71%
2023-07-28 31 -> 30 493.38

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 86% 4.20 RR IX Russian Riichi Championship
4 586 2022-06-12 47/112 43% 4.05 RR Moscow Riichi 2022
5 198 2018-11-18 74/92 0% 3.80 EMA VII Russian Riichi Championship "Aki Shanten"