Ratnikova Anna

From Samara, Russia

EMA: 15990370

Player page

Common russian riichi rating (CRR)

Rating date July 3, 2026 (latest changes July 3, 2026).

24 place (686.44).

max_coefficients = (4.71 * 1 + 3.90 * 1 + 4.10 * 0.86 + 3.45 * 1) = 15.574109999999997

p1 = (329.11 * 3.65 * 0.14 + 821.05 * 3.85 * 0.14 + 833.33 * 2.60 * 0.57 + 885.71 * 3.50 * 0.71 + 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 * 0.14 + 2.60 * 0.57 + 3.50 * 0.71 + 3 * 1 + 3 * 1 + 3.40 * 1 + 2.90 * 1 + 4.71 * 1) = 685.0155704513074

p2 = (790.21 * 4.71 * 1 + 857.14 * 2.90 * 1 + 763.64 * 3 * 1 + 885.71 * 3.50 * 0.71) / max_coefficients = 687.8620993430766

score = 685.0155704513074 * 0.5 + 687.8620993430766 * 0.5 = 686.438834897192

Rating changes

Show

all results
Date Place Points Reason
2026-07-03 23 -> 24 702.87 -> 686.44

Riichi over The Volga 2025: 86% -> 71%
2026-07-01 23 704.44 -> 702.87

SPB Riichi Open 2024: 29% -> 14%
2026-06-15 24 -> 23 691.45 -> 704.44
2026-06-14 32 -> 24 627.41 -> 691.45

XII Russian Championship: 0% -> 100%
2026-06-09 33 -> 32 627.41
2026-06-04 36 -> 33 622.75 -> 627.41

Riichi over Volga: 29% -> 14%
2026-06-02 39 -> 36 622.75
2026-06-01 40 -> 39 622.75
2026-05-26 33 -> 40 633.23 -> 622.75

Riichi On Ice: 71% -> 57%
2026-05-17 32 -> 33 633.23

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 71% 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 14% 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
16 455 2017-02-26 7/12 0% 1.10 CRR Mahjong tournament at the Intellectual Games Festival 2017 Samara