Tkachenko Ivan

From Sarov, Russia

EMA: 15990417

Player page

Internal rating (RR)

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

30 place (515.02).

max_coefficients = (4.20 * 1 + 4.05 * 1 + 3.50 * 1 + 3.45 * 0.71) = 14.214335

p1 = (672.73 * 3.30 * 0.71 + 595.74 * 3.10 * 0.71 + 828.83 * 4.05 * 1 + 0 + 0) / (3.30 * 0.71 + 3.10 * 0.71 + 4.05 * 1 + 1 + 1) = 589.5286173730314

p2 = (828.83 * 4.05 * 1 + 672.73 * 3.30 * 0.71 + 595.74 * 3.10 * 0.71) / max_coefficients = 440.51937709361715

score = 589.5286173730314 * 0.5 + 440.51937709361715 * 0.5 = 515.0239972333243

Rating changes

Show

all results
Date Place Points Reason
2023-02-19 27 -> 30 521.35 -> 515.02

Agari team tournament: 86% -> 71%
2023-01-28 30 -> 27 516.74 -> 521.35
2023-01-06 28 -> 30 529.21 -> 516.74

Kirov Tournament: 86% -> 71%
2022-12-19 25 -> 28 535.90 -> 529.21

Agari team tournament: 100% -> 86%
2022-11-28 27 -> 25 530.39 -> 535.90
2022-11-06 17 -> 27 557.70 -> 530.39

Kirov Tournament: 100% -> 86%
2022-06-12 26 -> 17 368.63 -> 557.70

Moscow Riichi 2022: 0% -> 100%
2022-05-13 116 -> 26 168.93 -> 368.63
2021-02-01 133 -> 116 315.12 -> 168.93
2020-02-01 133 315.12

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 829 2022-06-12 20/112 100% 4.05 RR Moscow Riichi 2022
2 596 2021-12-19 20/48 71% 3.10 RR Agari team tournament
3 673 2021-11-06 19/56 71% 3.30 RR Kirov Tournament
4 600 2019-07-21 15/36 0% 3.20 RR Moscow Open Riichi Marathon 2019
5 373 2019-05-04 53/84 0% 4.20 EMA Haru Shanten 2019
6 298 2019-01-13 34/48 0% 3.10 RR Agari team tournament 2019