Ratnikova Anna

From Samara, Russia

EMA: 15990370

Player page

Internal rating (RR)

Rating date April 4, 2026 (latest changes April 4, 2026).

39 place (597.76).

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

p1 = (644.86 * 4.60 * 0.14 + 329.11 * 3.65 * 0.29 + 821.05 * 3.85 * 0.43 + 833.33 * 2.60 * 0.71 + 885.71 * 3.50 * 1 + 418.60 * 3 * 1 + 763.64 * 3 * 1 + 378.38 * 3.40 * 1) / (4.60 * 0.14 + 3.65 * 0.29 + 3.85 * 0.43 + 2.60 * 0.71 + 3.50 * 1 + 3 * 1 + 3 * 1 + 3.40 * 1) = 640.774355948261

p2 = (885.71 * 3.50 * 1 + 763.64 * 3 * 1 + 833.33 * 2.60 * 0.71 + 821.05 * 3.85 * 0.43) / max_coefficients = 554.7418060200669

score = 640.774355948261 * 0.5 + 554.7418060200669 * 0.5 = 597.7580809841639

Rating changes

Show

all results
Date Place Points Reason
2026-04-04 40 -> 39 593.40 -> 597.76

Riichi over Volga: 43% -> 29%
2026-03-30 41 -> 40 593.40
2026-03-26 39 -> 41 605.71 -> 593.40

Riichi On Ice: 86% -> 71%
2026-03-12 40 -> 39 605.86 -> 605.71

X Russian Championship: 29% -> 14%
2026-03-01 35 -> 40 623.47 -> 605.86

SPB Riichi Open 2024: 57% -> 43%
2026-02-23 28 -> 35 650.06 -> 623.47

White Wolf Cup 2026: 0% -> 100%
2026-02-04 29 -> 28 644.57 -> 650.06

Riichi over Volga: 57% -> 43%
2026-02-02 31 -> 29 644.57
2026-01-26 29 -> 31 656.50 -> 644.57

Riichi On Ice: 100% -> 86%
2026-01-25 33 -> 29 614.02 -> 656.50

Riichi On Ice 2026: 0% -> 100%

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 378 2026-02-23 47/75 100% 3.40 RR White Wolf Cup 2026 Saint Petersburg
2 764 2026-01-25 14/56 100% 3.00 RR Riichi On Ice 2026 Samara
3 419 2025-08-03 26/44 100% 3.00 RR Two roosters and Chuckles Kirov
4 886 2025-05-03 9/71 100% 3.50 RR Riichi over The Volga 2025 Samara
5 833 2025-01-26 8/43 71% 2.60 RR Riichi On Ice Samara
6 821 2024-09-01 18/96 43% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
7 329 2024-08-04 54/80 29% 3.65 RR Riichi over Volga Samara
8 645 2024-05-12 39/108 14% 4.60 RR X Russian Championship Perm
9 439 2023-09-03 61/108 0% 4.00 RR SPB Riichi Open 2023 Saint Petersburg
10 552 2023-06-11 40/88 0% 3.75 RR Money can not buy tenpai Perm
11 600 2022-11-06 31/76 0% 4.20 RR IX Russian Riichi Championship Perm
12 586 2022-06-12 47/112 0% 4.05 RR Moscow Riichi 2022 Moscow
13 198 2018-11-18 74/92 0% 3.80 EMA VII Russian Riichi Championship "Aki Shanten" Perm