Grishina Olga

From Moscow, Russia

EMA: 15990379

Player page

Common russian riichi rating (CRR)

Rating date Sept. 21, 2026 (latest changes Sept. 17, 2026).

285 place (197.58).

max_coefficients = (4.71 * 1 + 3.90 * 1 + 3.40 * 1 + 3.40 * 1) = 15.41

p1 = (617.98 * 3.75 * 0.14 + 217.39 * 2.80 * 0.29 + 509.80 * 3.05 * 0.43 + 220 * 3.10 * 1 + 0) / (3.75 * 0.14 + 2.80 * 0.29 + 3.05 * 0.43 + 3.10 * 1 + 1) = 274.8735181998097

p2 = (220 * 3.10 * 1 + 509.80 * 3.05 * 0.43 + 617.98 * 3.75 * 0.14 + 217.39 * 2.80 * 0.29) / max_coefficients = 120.27839065541856

score = 274.8735181998097 * 0.5 + 120.27839065541856 * 0.5 = 197.57595442761414

Rating changes

Show

all results
Date Place Points Reason
2026-09-15 286 -> 285 197.58
2026-09-06 278 -> 286 197.58
2026-09-01 234 -> 278 260.08 -> 197.58

SPB Riichi Open 2024: 14% -> 0%
2026-08-31 234 259.85 -> 260.08
2026-08-30 231 -> 234 259.85
2026-08-26 232 -> 231 259.85
2026-08-16 228 -> 232 259.85
2026-08-15 229 -> 228 259.33 -> 259.85
2026-08-14 230 -> 229 259.33
2026-08-13 216 -> 230 279.39 -> 259.33

Moscow Riichi 2024: 29% -> 14%

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 220 2026-04-05 40/51 100% 3.10 RR Moscow Riichi 2026 Moscow
2 510 2025-02-02 26/52 43% 3.05 RR Agari Winter Tournament 2025 Moscow
3 217 2024-12-01 19/24 29% 2.80 CRR Riichi never changing Moscow
4 618 2024-10-13 35/90 14% 3.75 RR Moscow Riichi 2024 Moscow
5 947 2024-09-01 6/96 0% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
6 510 2024-06-09 26/52 0% 3.05 RR Agari Summer Tournament 2024 Moscow
7 226 2024-05-19 25/32 0% 1.80 CRR "Green Dragon" in the Secret Chamber Korolyov
8 505 2024-05-12 54/108 0% 4.60 RR X Russian Championship Perm
9 869 2023-09-03 15/108 0% 4.00 RR SPB Riichi Open 2023 Saint Petersburg
10 701 2023-06-11 27/88 0% 3.75 RR Money can not buy tenpai Perm
11 652 2022-12-18 9/24 0% 2.80 CRR Meeting in the billiard room Moscow
12 200 2022-11-06 61/76 0% 4.20 RR IX Russian Riichi Championship Perm
13 937 2022-06-12 8/112 0% 4.05 RR Moscow Riichi 2022 Moscow
14 697 2022-03-20 21/67 0% 3.45 RR Tenpai can't buy happiness Perm
15 106 2021-12-19 43/48 0% 3.10 RR Agari team tournament Moscow
16 707 2021-11-28 23/76 0% 3.45 RR Saint Petersburg Open 2021 Saint Petersburg
17 323 2020-01-26 22/32 0% 2.70 RR The last chance: back to 2019 Moscow
18 477 2019-12-15 59/112 0% 4.05 EMA VIII Russian Riichi Championship Moscow
19 371 2019-07-21 23/36 0% 3.20 RR Moscow Open Riichi Marathon 2019 Moscow
20 254 2018-12-16 48/64 0% 3.45 EMA White Dragon Tournament Moscow