Tkachenko Ivan

From Sarov, Russia

EMA: 15990417

Player page

Common russian riichi rating (CRR)

Rating date Sept. 6, 2023 (latest changes Sept. 6, 2023).

83 place (368.63).

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

p1 = (672.73 * 3.30 * 0.14 + 595.74 * 3.10 * 0.29 + 828.83 * 4.05 * 0.71 + 0 + 0) / (3.30 * 0.14 + 3.10 * 0.29 + 4.05 * 0.71 + 1 + 1) = 518.8031336822847

p2 = (828.83 * 4.05 * 0.71 + 595.74 * 3.10 * 0.29 + 672.73 * 3.30 * 0.14) / max_coefficients = 218.46113111878634

score = 518.8031336822847 * 0.5 + 218.46113111878634 * 0.5 = 368.6321324005355

Rating changes

Show

all results
Date Place Points Reason
2023-09-06 76 -> 83 384.71 -> 368.63

Kirov Tournament: 29% -> 14%
2023-09-03 56 -> 76 395.25 -> 384.71
2023-08-27 55 -> 56 395.25
2023-08-19 54 -> 55 406.97 -> 395.25

Agari team tournament: 43% -> 29%
2023-08-12 48 -> 54 429.15 -> 406.97

Moscow Riichi 2022: 86% -> 71%
2023-07-28 49 -> 48 429.15
2023-07-20 50 -> 49 429.15
2023-07-06 47 -> 50 443.66 -> 429.15

Kirov Tournament: 43% -> 29%
2023-07-03 48 -> 47 443.66
2023-06-19 46 -> 48 453.78 -> 443.66

Agari team tournament: 57% -> 43%

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 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