Ratnikova Anna

From Samara, Russia

EMA: 15990370

Player page

Internal rating (RR)

Rating date June 15, 2026 (latest changes June 14, 2026).

22 place (691.45).

max_coefficients = (4.71 * 1 + 4.10 * 1 + 3.90 * 1 + 3.45 * 1) = 16.16

p1 = (329.11 * 3.65 * 0.14 + 821.05 * 3.85 * 0.29 + 833.33 * 2.60 * 0.57 + 885.71 * 3.50 * 0.86 + 418.60 * 3 * 1 + 763.64 * 3 * 1 + 378.38 * 3.40 * 1 + 857.14 * 2.90 * 1 + 790.21 * 4.71 * 1) / (3.65 * 0.14 + 3.85 * 0.29 + 2.60 * 0.57 + 3.50 * 0.86 + 3 * 1 + 3 * 1 + 3.40 * 1 + 2.90 * 1 + 4.71 * 1) = 692.5901348876282

p2 = (790.21 * 4.71 * 1 + 885.71 * 3.50 * 0.86 + 857.14 * 2.90 * 1 + 763.64 * 3 * 1) / max_coefficients = 690.3168316831683

score = 692.5901348876282 * 0.5 + 690.3168316831683 * 0.5 = 691.4534832853983

Rating changes

Show

all results
Date Place Points Reason
2026-06-14 33 -> 22 627.41 -> 691.45

XII Russian Championship: 0% -> 100%
2026-06-09 34 -> 33 627.41
2026-06-08 35 -> 34 627.41
2026-06-04 37 -> 35 622.75 -> 627.41

Riichi over Volga: 29% -> 14%
2026-06-02 39 -> 37 622.75
2026-05-26 32 -> 39 633.23 -> 622.75

Riichi On Ice: 71% -> 57%
2026-05-17 31 -> 32 633.23
2026-05-12 31 632.95 -> 633.23

X Russian Championship: 14% -> 0%
2026-05-07 32 -> 31 632.95
2026-05-03 46 -> 32 592.65 -> 632.95

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

Sturgeon in tempai: 0% -> 100%

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 790 2026-06-14 31/144 100% 4.71 RR XII Russian Championship Samara
2 857 2026-05-03 7/43 100% 2.90 RR Sturgeon in tempai Saratov
3 378 2026-02-23 47/75 100% 3.40 RR White Wolf Cup 2026 Saint Petersburg
4 764 2026-01-25 14/56 100% 3.00 RR Riichi On Ice 2026 Samara
5 419 2025-08-03 26/44 100% 3.00 RR Two roosters and Chuckles Kirov
6 886 2025-05-03 9/71 86% 3.50 RR Riichi over The Volga 2025 Samara
7 833 2025-01-26 8/43 57% 2.60 RR Riichi On Ice Samara
8 821 2024-09-01 18/96 29% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
9 329 2024-08-04 54/80 14% 3.65 RR Riichi over Volga Samara
10 645 2024-05-12 39/108 0% 4.60 RR X Russian Championship Perm
11 439 2023-09-03 61/108 0% 4.00 RR SPB Riichi Open 2023 Saint Petersburg
12 552 2023-06-11 40/88 0% 3.75 RR Money can not buy tenpai Perm
13 600 2022-11-06 31/76 0% 4.20 RR IX Russian Riichi Championship Perm
14 586 2022-06-12 47/112 0% 4.05 RR Moscow Riichi 2022 Moscow
15 198 2018-11-18 74/92 0% 3.80 EMA VII Russian Riichi Championship "Aki Shanten" Perm