Kovalenko Natalya

From Irkutsk, Russia

Player page

Internal rating (RR)

Rating date April 10, 2019 (latest changes April 10, 2019).

267 place (22.77).

max_coefficients = (3.85 * 1 + 3.80 * 1 + 3.55 * 1 + 3.45 * 1) = 14.649999999999999

p1 = (105.26 * 1.30 * 0.43 + 105.26 * 1.30 * 0.71 + 0 + 0 + 0) / (1.30 * 0.43 + 1.30 * 0.71 + 1 + 1 + 1) = 34.86580899154437

p2 = (105.26 * 1.30 * 0.71 + 105.26 * 1.30 * 0.43) / max_coefficients = 10.675767918088738

score = 34.86580899154437 * 0.5 + 10.675767918088738 * 0.5 = 22.770788454816554

Rating changes

Show

Date Place Points Reason
2019-03-25 269 -> 267 22.77
2019-03-21 269 24.84 -> 22.77

Winter tournament: 86% -> 71%

2019-03-18 273 -> 269 24.84
2019-03-17 272 -> 273 26.79 -> 24.84

September tournament, Irkutsk 2017: 57% -> 43%

2019-03-11 275 -> 272 26.79
2019-03-09 272 -> 275 26.79
2019-01-29 275 -> 272 26.79
2019-01-25 276 -> 275 26.79
2019-01-21 275 -> 276 28.66 -> 26.79

Winter tournament: 100% -> 86%

2019-01-18 276 -> 275 28.66

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 105 2018-01-21 18/20 71% 1.30 RR Winter tournament
2 105 2017-09-17 18/20 43% 1.30 RR September tournament, Irkutsk 2017