Ratnikova Anna

From Samara, Russia

EMA: 15990370

Player page

Internal rating (RR)

Rating date Jan. 18, 2026 (latest changes Jan. 14, 2026).

33 place (614.02).

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 * 0.57 + 821.05 * 3.85 * 0.57 + 833.33 * 2.60 * 1 + 885.71 * 3.50 * 1 + 418.60 * 3 * 1) / (4.60 * 0.29 + 3.65 * 0.57 + 3.85 * 0.57 + 2.60 * 1 + 3.50 * 1 + 3 * 1) = 670.9379498385003

p2 = (885.71 * 3.50 * 1 + 833.33 * 2.60 * 1 + 821.05 * 3.85 * 0.57 + 418.60 * 3 * 1) / max_coefficients = 557.104347826087

score = 670.9379498385003 * 0.5 + 557.104347826087 * 0.5 = 614.0211488322936

Rating changes

Show

all results
Date Place Points Reason
2026-01-12 34 -> 33 613.98 -> 614.02

X Russian Championship: 43% -> 29%
2026-01-01 33 -> 34 631.71 -> 613.98

SPB Riichi Open 2024: 71% -> 57%
2025-12-04 34 -> 33 626.21 -> 631.71

Riichi over Volga: 71% -> 57%
2025-11-12 33 -> 34 640.01 -> 626.21

X Russian Championship: 57% -> 43%
2025-11-04 28 -> 33 654.03 -> 640.01
2025-11-01 26 -> 28 671.10 -> 654.03

SPB Riichi Open 2024: 86% -> 71%
2025-10-13 27 -> 26 660.85 -> 671.10
2025-10-09 29 -> 27 660.85
2025-10-04 30 -> 29 655.98 -> 660.85

Riichi over Volga: 86% -> 71%
2025-09-12 27 -> 30 670.06 -> 655.98

X Russian Championship: 71% -> 57%

Tournaments

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