Ratnikova Anna

From Samara, Russia

EMA: 15990370

Player page

Common russian riichi rating (CRR)

Rating date Jan. 26, 2025 (latest changes Jan. 26, 2025).

35 place (605.73).

max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85

p1 = (551.72 * 3.75 * 0.43 + 439.25 * 4 * 0.57 + 644.86 * 4.60 * 1 + 329.11 * 3.65 * 1 + 821.05 * 3.85 * 1 + 833.33 * 2.60 * 1) / (3.75 * 0.43 + 4 * 0.57 + 4.60 * 1 + 3.65 * 1 + 3.85 * 1 + 2.60 * 1) = 612.3897089472566

p2 = (821.05 * 3.85 * 1 + 644.86 * 4.60 * 1 + 833.33 * 2.60 * 1 + 329.11 * 3.65 * 1) / max_coefficients = 599.0757097791799

score = 612.3897089472566 * 0.5 + 599.0757097791799 * 0.5 = 605.7327093632182

Rating changes

Show

all results
Date Place Points Reason
2025-01-26 47 -> 35 551.09 -> 605.73

Riichi On Ice: 0% -> 100%
2025-01-07 45 -> 47 551.09
2025-01-05 46 -> 45 551.09
2025-01-03 46 556.65 -> 551.09

SPB Riichi Open 2023: 71% -> 57%
2024-12-11 47 -> 46 556.33 -> 556.65

Money can not buy tenpai: 57% -> 43%
2024-12-01 48 -> 47 556.33
2024-11-26 49 -> 48 556.33
2024-11-05 50 -> 49 556.82 -> 556.33
2024-11-03 50 562.66 -> 556.82

SPB Riichi Open 2023: 86% -> 71%
2024-10-13 44 -> 50 568.43 -> 562.66

Tournaments

# Base rank Date Place Power Coefficient Type Tournament City
1 833 2025-01-26 8/43 100% 2.60 RR Riichi On Ice Samara
2 821 2024-09-01 18/96 100% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
3 329 2024-08-04 54/80 100% 3.65 RR Riichi over Volga Samara
4 645 2024-05-12 39/108 100% 4.60 RR X Russian Championship Perm
5 439 2023-09-03 61/108 57% 4.00 RR SPB Riichi Open 2023 Saint Petersburg
6 552 2023-06-11 40/88 43% 3.75 RR Money can not buy tenpai Perm
7 600 2022-11-06 31/76 0% 4.20 RR IX Russian Riichi Championship Perm
8 586 2022-06-12 47/112 0% 4.05 RR Moscow Riichi 2022 Moscow
9 198 2018-11-18 74/92 0% 3.80 EMA VII Russian Riichi Championship "Aki Shanten" Perm
10 455 2017-02-26 7/12 0% 1.10 CRR Mahjong tournament at the Intellectual Games Festival 2017 Samara