Grishina Olga

From Moscow, Russia

EMA: 15990379

Player page

Internal rating (RR)

Rating date Sept. 5, 2025 (latest changes Sept. 3, 2025).

46 place (606.23).

max_coefficients = (4.10 * 1 + 3.75 * 1 + 3.50 * 1 + 3.45 * 1) = 14.8

p1 = (504.67 * 4.60 * 0.71 + 509.80 * 3.05 * 0.71 + 947.37 * 3.85 * 0.86 + 617.98 * 3.75 * 1 + 509.80 * 3.05 * 1) / (4.60 * 0.71 + 3.05 * 0.71 + 3.85 * 0.86 + 3.75 * 1 + 3.05 * 1) = 627.5536920233125

p2 = (947.37 * 3.85 * 0.86 + 617.98 * 3.75 * 1 + 504.67 * 4.60 * 0.71 + 509.80 * 3.05 * 1) / max_coefficients = 584.9135135135134

score = 627.5536920233125 * 0.5 + 584.9135135135134 * 0.5 = 606.233602768413

Rating changes

Show

all results
Date Place Points Reason
2025-09-03 46 610.51 -> 606.23

SPB Riichi Open 2023: 14% -> 0%
2025-09-01 40 -> 46 625.09 -> 610.51

SPB Riichi Open 2024: 100% -> 86%
2025-08-31 38 -> 40 625.09
2025-08-09 38 623.36 -> 625.09

Agari Summer Tournament 2024: 86% -> 71%
2025-08-04 40 -> 38 620.41 -> 623.36
2025-08-03 37 -> 40 620.41
2025-07-13 35 -> 37 620.41
2025-07-12 36 -> 35 622.86 -> 620.41

X Russian Championship: 86% -> 71%
2025-07-10 37 -> 36 622.86
2025-07-03 36 -> 37 626.46 -> 622.86

SPB Riichi Open 2023: 29% -> 14%

Tournaments

# Base rank Date Place Power Coefficient Type Tournament City
1 510 2025-02-02 26/52 100% 3.05 RR Agari Winter Tournament 2025 Moscow
2 618 2024-10-13 35/90 100% 3.75 RR Moscow Riichi 2024 Moscow
3 947 2024-09-01 6/96 86% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
4 510 2024-06-09 26/52 71% 3.05 RR Agari Summer Tournament 2024 Moscow
5 505 2024-05-12 54/108 71% 4.60 RR X Russian Championship Perm
6 869 2023-09-03 15/108 0% 4.00 RR SPB Riichi Open 2023 Saint Petersburg
7 701 2023-06-11 27/88 0% 3.75 RR Money can not buy tenpai Perm
8 200 2022-11-06 61/76 0% 4.20 RR IX Russian Riichi Championship Perm
9 937 2022-06-12 8/112 0% 4.05 RR Moscow Riichi 2022 Moscow
10 701 2022-03-20 21/68 0% 3.50 RR Tenpai can't buy happiness Perm
11 106 2021-12-19 43/48 0% 3.10 RR Agari team tournament Moscow
12 707 2021-11-28 23/76 0% 3.45 RR Saint Petersburg Open 2021 Saint Petersburg
13 323 2020-01-26 22/32 0% 2.70 RR The last chance: back to 2019 Moscow
14 477 2019-12-15 59/112 0% 4.05 EMA VIII Russian Riichi Championship Moscow
15 371 2019-07-21 23/36 0% 3.20 RR Moscow Open Riichi Marathon 2019 Moscow
16 254 2018-12-16 48/64 0% 3.45 EMA White Dragon Tournament Moscow