Ratnikova Anna

From Samara, Russia

EMA: 15990370

Player page

Internal rating (RR)

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

22 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
2023-12-19 25 -> 22 516.12
2023-12-12 22 -> 25 518.93 -> 516.12

Moscow Riichi 2022: 57% -> 43%
2023-12-09 22 518.93

Tournaments

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