Tkachenko Ivan

From Sarov, Russia

EMA: 15990417

Player page

Internal rating (RR)

Rating date March 17, 2021 (latest changes March 17, 2021).

114 place (156.85).

max_coefficients = (4.05 * 0.71 + 2.90 * 0.86 + 3.45 * 0.71 + 2.70 * 0.86) = 10.15701

p1 = (373.49 * 4.20 * 0.14 + 600 * 3.20 * 0.43 + 0 + 0 + 0) / (4.20 * 0.14 + 3.20 * 0.43 + 1 + 1 + 1) = 210.60603013053884

p2 = (600 * 3.20 * 0.43 + 373.49 * 4.20 * 0.14) / max_coefficients = 103.08840889198692

score = 210.60603013053884 * 0.5 + 103.08840889198692 * 0.5 = 156.8472195112629

Rating changes

Show

Date Place Points Reason
2021-03-17 115 -> 114 156.85
2021-03-08 115 154.83 -> 156.85
2021-03-04 115 171.81 -> 154.83

Haru Shanten 2019: 29% -> 14%

2021-02-16 116 -> 115 171.81
2021-02-15 116 168.93 -> 171.81
2021-02-10 118 -> 116 168.93
2021-01-26 118 167.83 -> 168.93
2021-01-24 119 -> 118 166.69 -> 167.83
2021-01-21 111 -> 119 192.13 -> 166.69

Moscow Open Riichi Marathon 2019: 57% -> 43%

2021-01-17 112 -> 111 192.13

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 600 2019-07-21 15/36 43% 3.20 RR Moscow Open Riichi Marathon 2019
2 373 2019-05-04 53/84 14% 4.20 EMA Haru Shanten 2019
3 298 2019-01-13 34/48 0% 3.10 RR Agari team tournament 2019