Ratnikova Anna

From Samara, Russia

EMA: 15990370

Player page

Common russian riichi rating (CRR)

Rating date Feb. 7, 2026 (latest changes Feb. 4, 2026).

30 place (650.06).

max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95

p1 = (644.86 * 4.60 * 0.29 + 329.11 * 3.65 * 0.43 + 821.05 * 3.85 * 0.57 + 833.33 * 2.60 * 0.86 + 885.71 * 3.50 * 1 + 418.60 * 3 * 1 + 763.64 * 3 * 1) / (4.60 * 0.29 + 3.65 * 0.43 + 3.85 * 0.57 + 2.60 * 0.86 + 3.50 * 1 + 3 * 1 + 3 * 1) = 694.4950187303356

p2 = (885.71 * 3.50 * 1 + 763.64 * 3 * 1 + 833.33 * 2.60 * 0.86 + 821.05 * 3.85 * 0.57) / max_coefficients = 605.6314381270904

score = 694.4950187303356 * 0.5 + 605.6314381270904 * 0.5 = 650.063228428713

Rating changes

Show

all results
Date Place Points Reason
2026-02-04 30 644.57 -> 650.06

Riichi over Volga: 57% -> 43%
2026-02-02 32 -> 30 644.57
2026-01-26 30 -> 32 656.50 -> 644.57

Riichi On Ice: 100% -> 86%
2026-01-25 35 -> 30 614.02 -> 656.50

Riichi On Ice 2026: 0% -> 100%
2026-01-12 36 -> 35 613.98 -> 614.02

X Russian Championship: 43% -> 29%
2026-01-10 37 -> 36 613.98
2026-01-01 36 -> 37 631.71 -> 613.98

SPB Riichi Open 2024: 71% -> 57%
2025-12-04 37 -> 36 626.21 -> 631.71

Riichi over Volga: 71% -> 57%
2025-11-30 36 -> 37 626.21
2025-11-12 34 -> 36 640.01 -> 626.21

X Russian Championship: 57% -> 43%

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 764 2026-01-25 14/56 100% 3.00 RR Riichi On Ice 2026 Samara
2 419 2025-08-03 26/44 100% 3.00 RR Two roosters and Chuckles Kirov
3 886 2025-05-03 9/71 100% 3.50 RR Riichi over The Volga 2025 Samara
4 833 2025-01-26 8/43 86% 2.60 RR Riichi On Ice Samara
5 821 2024-09-01 18/96 57% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
6 329 2024-08-04 54/80 43% 3.65 RR Riichi over Volga Samara
7 645 2024-05-12 39/108 29% 4.60 RR X Russian Championship Perm
8 439 2023-09-03 61/108 0% 4.00 RR SPB Riichi Open 2023 Saint Petersburg
9 552 2023-06-11 40/88 0% 3.75 RR Money can not buy tenpai Perm
10 600 2022-11-06 31/76 0% 4.20 RR IX Russian Riichi Championship Perm
11 586 2022-06-12 47/112 0% 4.05 RR Moscow Riichi 2022 Moscow
12 198 2018-11-18 74/92 0% 3.80 EMA VII Russian Riichi Championship "Aki Shanten" Perm
13 455 2017-02-26 7/12 0% 1.10 CRR Mahjong tournament at the Intellectual Games Festival 2017 Samara