Ratnikova Anna

From Samara, Russia

EMA: 15990370

Player page

Common russian riichi rating (CRR)

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

29 place (677.49).

max_coefficients = (4.71 * 1 + 3.90 * 1 + 3.40 * 1 + 3.40 * 1) = 15.41

p1 = (833.33 * 2.60 * 0.43 + 885.71 * 3.50 * 0.57 + 418.60 * 3 * 0.86 + 763.64 * 3 * 1 + 378.38 * 3.40 * 1 + 857.14 * 2.90 * 1 + 790.21 * 4.71 * 1) / (2.60 * 0.43 + 3.50 * 0.57 + 3 * 0.86 + 3 * 1 + 3.40 * 1 + 2.90 * 1 + 4.71 * 1) = 688.5475711277059

p2 = (790.21 * 4.71 * 1 + 857.14 * 2.90 * 1 + 763.64 * 3 * 1 + 885.71 * 3.50 * 0.57) / max_coefficients = 666.4406229720961

score = 688.5475711277059 * 0.5 + 666.4406229720961 * 0.5 = 677.494097049901

Rating changes

Show

all results
Date Place Points Reason
2026-09-03 25 -> 29 694.31 -> 677.49

Riichi over The Volga 2025: 71% -> 57%
2026-09-01 25 696.00 -> 694.31

SPB Riichi Open 2024: 14% -> 0%
2026-08-31 25 694.88 -> 696.00
2026-08-16 22 -> 25 694.88
2026-08-15 23 -> 22 692.34 -> 694.88
2026-08-13 24 -> 23 692.34
2026-08-04 26 -> 24 687.83 -> 692.34

Riichi over Volga: 14% -> 0%
2026-08-03 26 685.17 -> 687.83

Two roosters and Chuckles: 100% -> 86%
2026-07-26 26 686.44 -> 685.17

Riichi On Ice: 57% -> 43%
2026-07-12 25 -> 26 686.44

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 86% 3.00 RR Two roosters and Chuckles Kirov
6 886 2025-05-03 9/71 57% 3.50 RR Riichi over The Volga 2025 Samara
7 833 2025-01-26 8/43 43% 2.60 RR Riichi On Ice Samara
8 821 2024-09-01 18/96 0% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
9 329 2024-08-04 54/80 0% 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