Grishina Olga

From Moscow, Russia

EMA: 15990379

Player page

Internal rating (RR)

Rating date May 25, 2024 (latest changes May 12, 2024).

15 place (607.94).

max_coefficients = (4.60 * 1 + 4 * 1 + 3.75 * 1 + 3.05 * 1) = 15.399999999999999

p1 = (936.94 * 4.05 * 0.14 + 200 * 4.20 * 0.43 + 701.15 * 3.75 * 1 + 869.16 * 4 * 1 + 504.67 * 4.60 * 1) / (4.05 * 0.14 + 4.20 * 0.43 + 3.75 * 1 + 4 * 1 + 4.60 * 1) = 633.4310213312431

p2 = (869.16 * 4 * 1 + 701.15 * 3.75 * 1 + 504.67 * 4.60 * 1 + 936.94 * 4.05 * 0.14) / max_coefficients = 582.448051948052

score = 633.4310213312431 * 0.5 + 582.448051948052 * 0.5 = 607.9395366396475

Rating changes

Show

Date Place Points Reason
2024-05-12 11 -> 15 586.50 -> 607.94

X Russian Championship: 0% -> 100%

2024-05-06 13 -> 11 573.89 -> 586.50

IX Russian Riichi Championship: 57% -> 43%

2024-04-12 9 -> 13 602.15 -> 573.89

Moscow Riichi 2022: 29% -> 14%

2024-03-30 8 -> 9 602.15
2024-03-20 7 -> 8 630.20 -> 602.15

Tenpai can't buy happiness: 14% -> 0%

2024-03-10 4 -> 7 678.84 -> 630.20
2024-03-06 4 655.19 -> 678.84

IX Russian Riichi Championship: 71% -> 57%

2024-02-12 4 668.00 -> 655.19

Moscow Riichi 2022: 43% -> 29%

2024-01-20 4 672.67 -> 668.00

Tenpai can't buy happiness: 29% -> 14%

2024-01-06 5 -> 4 647.89 -> 672.67

IX Russian Riichi Championship: 86% -> 71%

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 505 2024-05-12 54/108 100% 4.60 RR X Russian Championship
2 869 2023-09-03 15/108 100% 4.00 RR SPB Riichi Open 2023
3 701 2023-06-11 27/88 100% 3.75 RR Money can not buy tenpai
4 200 2022-11-06 61/76 43% 4.20 RR IX Russian Riichi Championship
5 937 2022-06-12 8/112 14% 4.05 RR Moscow Riichi 2022
6 701 2022-03-20 21/68 0% 3.50 RR Tenpai can't buy happiness
7 106 2021-12-19 43/48 0% 3.10 RR Agari team tournament
8 707 2021-11-28 23/76 0% 3.45 RR Saint Petersburg Open 2021
9 323 2020-01-26 22/32 0% 2.70 RR The last chance: back to 2019
10 477 2019-12-15 59/112 0% 4.05 EMA VIII Russian Riichi Championship
11 371 2019-07-21 23/36 0% 3.20 RR Moscow Open Riichi Marathon 2019
12 254 2018-12-16 48/64 0% 3.45 EMA White Dragon Tournament