Sychev Ivan

From Saint Petersburg, Russia

EMA: 15990298

Player page

Internal rating (RR)

Rating date Nov. 28, 2021 (latest changes Nov. 6, 2021).

38 place (624.69).

max_coefficients = (4.20 * 1 + 4.05 * 1 + 3.85 * 1 + 3.45 * 1) = 15.55

p1 = (957.75 * 3.55 * 0.29 + 565.22 * 2.50 * 0.57 + 615.38 * 2.90 * 0.71 + 666.67 * 3.45 * 1 + 855.86 * 4.05 * 1) / (3.55 * 0.29 + 2.50 * 0.57 + 2.90 * 0.71 + 3.45 * 1 + 4.05 * 1) = 734.1109961083567

p2 = (855.86 * 4.05 * 1 + 666.67 * 3.45 * 1 + 615.38 * 2.90 * 0.71 + 957.75 * 3.55 * 0.29) / max_coefficients = 515.2636655948553

score = 734.1109961083567 * 0.5 + 515.2636655948553 * 0.5 = 624.687330851606

Rating changes

Show

Date Place Points Reason
2021-11-06 34 -> 38 624.69
2021-10-30 44 -> 34 230.21 -> 624.69

VIII Russian Riichi Championship: 14% -> 100%

Saint Petersburg Open 2019: 14% -> 100%

North Cup 2018: 0% -> 71%

West cup 2018: 0% -> 57%

RCR Saint Petersburg South Cup 2018: 0% -> 29%

2021-10-15 36 -> 44 311.54 -> 230.21

VIII Russian Riichi Championship: 29% -> 14%

2021-09-26 37 -> 36 296.21 -> 311.54
2021-09-24 31 -> 37 341.48 -> 296.21

Saint Petersburg Open 2019: 29% -> 14%

2021-09-15 32 -> 31 341.48
2021-09-08 37 -> 32 326.34 -> 341.48
2021-09-04 40 -> 37 322.59 -> 326.34
2021-08-15 37 -> 40 376.87 -> 322.59

VIII Russian Riichi Championship: 43% -> 29%

2021-08-03 38 -> 37 376.87

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 856 2019-12-15 17/112 100% 4.05 EMA VIII Russian Riichi Championship
2 667 2019-11-24 22/64 100% 3.45 EMA Saint Petersburg Open 2019
3 615 2018-12-23 16/40 71% 2.90 RR North Cup 2018
4 565 2018-09-23 11/24 57% 2.50 RR West cup 2018
5 958 2018-06-11 4/72 29% 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