Ratnikova Anna

From Samara, Russia

EMA: 15990370

Player page

Common russian riichi rating (CRR)

Rating date Dec. 22, 2024 (latest changes Dec. 22, 2024).

46 place (556.65).

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

p1 = (551.72 * 3.75 * 0.43 + 644.86 * 4.60 * 1 + 439.25 * 4 * 0.71 + 329.11 * 3.65 * 1 + 821.05 * 3.85 * 1) / (3.75 * 0.43 + 4.60 * 1 + 4 * 0.71 + 3.65 * 1 + 3.85 * 1) = 571.734648599863

p2 = (821.05 * 3.85 * 1 + 644.86 * 4.60 * 1 + 439.25 * 4 * 0.71 + 329.11 * 3.65 * 1) / max_coefficients = 541.5589905362775

score = 571.734648599863 * 0.5 + 541.5589905362775 * 0.5 = 556.6468195680702

Rating changes

Show

all results
Date Place Points Reason
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
2024-10-11 42 -> 44 577.11 -> 568.43

Money can not buy tenpai: 71% -> 57%
2024-09-06 42 577.61 -> 577.11

IX Russian Riichi Championship: 29% -> 14%
2024-09-03 41 -> 42 573.14 -> 577.61

SPB Riichi Open 2023: 100% -> 86%
2024-09-01 63 -> 41 493.72 -> 573.14

SPB Riichi Open 2024: 0% -> 100%

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 821 2024-09-01 18/96 100% 3.85 RR SPB Riichi Open 2024
2 329 2024-08-04 54/80 100% 3.65 RR Riichi over Volga
3 645 2024-05-12 39/108 100% 4.60 RR X Russian Championship
4 439 2023-09-03 61/108 71% 4.00 RR SPB Riichi Open 2023
5 552 2023-06-11 40/88 43% 3.75 RR Money can not buy tenpai
6 600 2022-11-06 31/76 0% 4.20 RR IX Russian Riichi Championship
7 586 2022-06-12 47/112 0% 4.05 RR Moscow Riichi 2022
8 198 2018-11-18 74/92 0% 3.80 EMA VII Russian Riichi Championship "Aki Shanten"
9 455 2017-02-26 7/12 0% 1.10 CRR Mahjong tournament at the Intellectual Games Festival 2017