Tkachenko Ivan

From Sarov, Russia

EMA: 15990417

Player page

Internal rating (RR)

Rating date Oct. 12, 2023 (latest changes Oct. 12, 2023).

77 place (340.43).

max_coefficients = (4.20 * 1 + 4 * 1 + 3.75 * 1 + 4.05 * 0.57) = 14.26417

p1 = (672.73 * 3.30 * 0.14 + 595.74 * 3.10 * 0.29 + 828.83 * 4.05 * 0.57 + 0 + 0) / (3.30 * 0.14 + 3.10 * 0.29 + 4.05 * 0.57 + 1 + 1) = 487.1663307713602

p2 = (828.83 * 4.05 * 0.57 + 595.74 * 3.10 * 0.29 + 672.73 * 3.30 * 0.14) / max_coefficients = 193.69651371232956

score = 487.1663307713602 * 0.5 + 193.69651371232956 * 0.5 = 340.43142224184487

Rating changes

Show

all results
Date Place Points Reason
2023-10-12 67 -> 77 368.63 -> 340.43

Moscow Riichi 2022: 71% -> 57%
2023-09-28 70 -> 67 368.63
2023-09-20 71 -> 70 368.63
2023-09-06 67 -> 71 384.71 -> 368.63

Kirov Tournament: 29% -> 14%
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%

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 829 2022-06-12 20/112 57% 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 14% 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