Sychev Ivan

From Saint Petersburg, Russia

EMA: 15990298

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Internal rating (RR)

Rating date Feb. 1, 2021 (latest changes Feb. 1, 2021).

42 place (457.28).

max_coefficients = (4.05 * 0.86 + 2.90 * 1 + 3.85 * 0.71 + 3.45 * 0.71) = 11.585645

p1 = (666.67 * 3.45 * 0.71 + 855.86 * 4.05 * 0.86 + 0 + 0 + 0) / (3.45 * 0.71 + 4.05 * 0.86 + 1 + 1 + 1) = 516.3374774357374

p2 = (855.86 * 4.05 * 0.86 + 666.67 * 3.45 * 0.71) / max_coefficients = 398.23246785137985

score = 516.3374774357374 * 0.5 + 398.23246785137985 * 0.5 = 457.2849726435586

Rating changes

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all results
Date Place Points Reason
2021-02-01 28 -> 42 646.36 -> 457.28
2020-02-01 28 646.36

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 856 2019-12-15 17/112 86% 4.05 EMA VIII Russian Riichi Championship
2 667 2019-11-24 22/64 71% 3.45 EMA Saint Petersburg Open 2019
3 615 2018-12-23 16/40 0% 2.90 RR North Cup 2018
4 565 2018-09-23 11/24 0% 2.50 RR West cup 2018
5 958 2018-06-11 4/72 0% 3.55 EMA RCR Saint Petersburg South Cup 2018
6 419 2018-03-04 19/32 0% 2.70 RR East Cup 2018
7 940 2017-12-11 6/84 0% 3.40 EMA VI Russian Riichi Championship 2017
8 821 2017-10-01 8/40 0% 1.80 RR Saint Petersburg championship. Northern cup 2017
9 103 2017-06-03 36/40 0% 1.80 RR Saint Petersburg championship. West cup 2017
10 744 2017-03-18 12/44 0% 1.90 RR Saint Petersburg championship. South cup 2017
11 620 2016-12-04 28/72 0% 3.25 EMA Saint Petersburg Riichi Open 2016
12 613 2016-10-16 13/32 0% 1.60 RR Tournament of 4 winds. West cup 2016