Tkachenko Ivan

From Sarov, Russia

EMA: 15990417

Player page

Internal rating (RR)

Rating date Sept. 3, 2023 (latest changes Sept. 3, 2023).

67 place (384.71).

max_coefficients = (4.20 * 1 + 4 * 1 + 3.75 * 1 + 4.05 * 0.71) = 14.842915

p1 = (672.73 * 3.30 * 0.29 + 595.74 * 3.10 * 0.29 + 828.83 * 4.05 * 0.71 + 0 + 0) / (3.30 * 0.29 + 3.10 * 0.29 + 4.05 * 0.71 + 1 + 1) = 529.5939310217597

p2 = (828.83 * 4.05 * 0.71 + 672.73 * 3.30 * 0.29 + 595.74 * 3.10 * 0.29) / max_coefficients = 239.8187957015182

score = 529.5939310217597 * 0.5 + 239.8187957015182 * 0.5 = 384.7063633616389

Rating changes

Show

all results
Date Place Points Reason
2023-09-03 48 -> 67 403.38 -> 384.71
2023-08-19 46 -> 48 415.70 -> 403.38

Agari team tournament: 43% -> 29%
2023-08-12 43 -> 46 438.17 -> 415.70

Moscow Riichi 2022: 86% -> 71%
2023-07-20 43 432.41 -> 438.17
2023-07-06 42 -> 43 447.16 -> 432.41

Kirov Tournament: 43% -> 29%
2023-06-19 38 -> 42 457.48 -> 447.16

Agari team tournament: 57% -> 43%
2023-06-12 34 -> 38 475.32 -> 457.48

Moscow Riichi 2022: 100% -> 86%
2023-06-11 30 -> 34 504.54 -> 475.32
2023-05-28 30 501.18 -> 504.54
2023-05-20 30 493.21 -> 501.18

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 829 2022-06-12 20/112 71% 4.05 RR Moscow Riichi 2022
2 596 2021-12-19 20/48 29% 3.10 RR Agari team tournament
3 673 2021-11-06 19/56 29% 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