Ratnikova Anna

From Samara, Russia

EMA: 15990370

Player page

Internal rating (RR)

Rating date May 5, 2026 (latest changes May 3, 2026).

32 place (632.95).

max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.45 * 1 + 3.40 * 1) = 14.85

p1 = (644.86 * 4.60 * 0.14 + 329.11 * 3.65 * 0.29 + 821.05 * 3.85 * 0.29 + 833.33 * 2.60 * 0.71 + 885.71 * 3.50 * 0.86 + 418.60 * 3 * 1 + 763.64 * 3 * 1 + 378.38 * 3.40 * 1 + 857.14 * 2.90 * 1) / (4.60 * 0.14 + 3.65 * 0.29 + 3.85 * 0.29 + 2.60 * 0.71 + 3.50 * 0.86 + 3 * 1 + 3 * 1 + 3.40 * 1 + 2.90 * 1) = 661.1064121476445

p2 = (885.71 * 3.50 * 0.86 + 857.14 * 2.90 * 1 + 763.64 * 3 * 1 + 833.33 * 2.60 * 0.71) / max_coefficients = 604.8000000000001

score = 661.1064121476445 * 0.5 + 604.8000000000001 * 0.5 = 632.9532060738222

Rating changes

Show

all results
Date Place Points Reason
2026-05-03 46 -> 32 592.65 -> 632.95

Riichi over The Volga 2025: 100% -> 86%

Sturgeon in tempai: 0% -> 100%
2026-05-01 45 -> 46 597.76 -> 592.65

SPB Riichi Open 2024: 43% -> 29%
2026-04-26 44 -> 45 597.76
2026-04-16 45 -> 44 597.76
2026-04-13 46 -> 45 597.76
2026-04-11 43 -> 46 597.76
2026-04-09 44 -> 43 597.76
2026-04-05 39 -> 44 597.76
2026-04-04 40 -> 39 593.40 -> 597.76

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

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 857 2026-05-03 7/43 100% 2.90 RR Sturgeon in tempai Saratov
2 378 2026-02-23 47/75 100% 3.40 RR White Wolf Cup 2026 Saint Petersburg
3 764 2026-01-25 14/56 100% 3.00 RR Riichi On Ice 2026 Samara
4 419 2025-08-03 26/44 100% 3.00 RR Two roosters and Chuckles Kirov
5 886 2025-05-03 9/71 86% 3.50 RR Riichi over The Volga 2025 Samara
6 833 2025-01-26 8/43 71% 2.60 RR Riichi On Ice Samara
7 821 2024-09-01 18/96 29% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
8 329 2024-08-04 54/80 29% 3.65 RR Riichi over Volga Samara
9 645 2024-05-12 39/108 14% 4.60 RR X Russian Championship Perm
10 439 2023-09-03 61/108 0% 4.00 RR SPB Riichi Open 2023 Saint Petersburg
11 552 2023-06-11 40/88 0% 3.75 RR Money can not buy tenpai Perm
12 600 2022-11-06 31/76 0% 4.20 RR IX Russian Riichi Championship Perm
13 586 2022-06-12 47/112 0% 4.05 RR Moscow Riichi 2022 Moscow
14 198 2018-11-18 74/92 0% 3.80 EMA VII Russian Riichi Championship "Aki Shanten" Perm