Tkachenko Ivan

From Sarov, Russia

EMA: 15990417

Player page

Internal rating (RR)

Rating date June 21, 2023 (latest changes June 21, 2023).

42 place (447.16).

max_coefficients = (4.20 * 1 + 3.75 * 1 + 4.05 * 0.86 + 3.50 * 0.71) = 13.921305

p1 = (672.73 * 3.30 * 0.43 + 595.74 * 3.10 * 0.43 + 828.83 * 4.05 * 0.86 + 0 + 0) / (3.30 * 0.43 + 3.10 * 0.43 + 4.05 * 0.86 + 1 + 1) = 562.447538102783

p2 = (828.83 * 4.05 * 0.86 + 672.73 * 3.30 * 0.43 + 595.74 * 3.10 * 0.43) / max_coefficients = 331.8733408972794

score = 562.447538102783 * 0.5 + 331.8733408972794 * 0.5 = 447.1604395000312

Rating changes

Show

all results
Date Place Points Reason
2023-06-19 115 -> 42 168.93 -> 447.16

Agari team tournament: 57% -> 43%
2021-02-01 132 -> 115 315.12 -> 168.93
2020-02-01 132 315.12

Tournaments

# Base rank Date Place Power Coefficient Type Tournament City
1 829 2022-06-12 20/112 86% 4.05 RR Moscow Riichi 2022 Moscow
2 596 2021-12-19 20/48 43% 3.10 RR Agari team tournament Moscow
3 673 2021-11-06 19/56 43% 3.30 RR Kirov Tournament Kirov
4 600 2019-07-21 15/36 0% 3.20 RR Moscow Open Riichi Marathon 2019 Moscow
5 373 2019-05-04 53/84 0% 4.20 EMA Haru Shanten 2019 Perm
6 298 2019-01-13 34/48 0% 3.10 RR Agari team tournament 2019 Moscow