Tkachenko Ivan

From Sarov, Russia

EMA: 15990417

Player page

Internal rating (RR)

Rating date June 10, 2023 (latest changes May 30, 2023).

37 place (504.54).

max_coefficients = (4.20 * 1 + 4.05 * 1 + 3.50 * 0.71 + 3.10 * 0.57) = 12.52139

p1 = (672.73 * 3.30 * 0.43 + 595.74 * 3.10 * 0.57 + 828.83 * 4.05 * 1 + 0 + 0) / (3.30 * 0.43 + 3.10 * 0.57 + 4.05 * 1 + 1 + 1) = 580.736531640197

p2 = (828.83 * 4.05 * 1 + 595.74 * 3.10 * 0.57 + 672.73 * 3.30 * 0.43) / max_coefficients = 428.34860985880965

score = 580.736531640197 * 0.5 + 428.34860985880965 * 0.5 = 504.5425707495033

Rating changes

Show

all results
Date Place Points Reason
2023-05-30 40 -> 37 504.54
2023-05-28 40 501.18 -> 504.54
2023-05-20 40 493.21 -> 501.18
2023-05-06 38 -> 40 507.43 -> 493.21

Kirov Tournament: 57% -> 43%
2023-04-30 41 -> 38 507.43
2023-04-19 40 -> 41 513.58 -> 507.43

Agari team tournament: 71% -> 57%
2023-03-30 43 -> 40 513.58

Moscow Open Riichi Marathon 2019: 14% -> 0%
2023-03-28 44 -> 43 509.56 -> 513.58
2023-03-20 44 501.93 -> 509.56
2023-03-06 34 -> 44 554.16 -> 501.93

Kirov Tournament: 71% -> 57%

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 57% 3.10 RR Agari team tournament
3 673 2021-11-06 19/56 43% 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