Tkachenko Ivan

From Sarov, Russia

EMA: 15990417

Player page

Common russian riichi rating (CRR)

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

54 place (406.97).

max_coefficients = (4.20 * 1 + 3.75 * 1 + 4.05 * 0.71 + 2.80 * 1) = 13.642914999999999

p1 = (672.73 * 3.30 * 0.29 + 595.74 * 3.10 * 0.43 + 828.83 * 4.05 * 0.71 + 0 + 0) / (3.30 * 0.29 + 3.10 * 0.43 + 4.05 * 0.71 + 1 + 1) = 533.6843288014254

p2 = (828.83 * 4.05 * 0.71 + 595.74 * 3.10 * 0.43 + 672.73 * 3.30 * 0.29) / max_coefficients = 280.256821947509

score = 533.6843288014254 * 0.5 + 280.256821947509 * 0.5 = 406.9705753744672

Rating changes

Show

all results
Date Place Points Reason
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%
2023-06-12 40 -> 46 471.57 -> 453.78

Moscow Riichi 2022: 100% -> 86%
2023-06-11 35 -> 40 488.28 -> 471.57
2023-05-20 36 -> 35 481.24 -> 488.28
2023-05-06 34 -> 36 494.76 -> 481.24

Kirov 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 43% 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