Tkachenko Maria

From Sarov, Russia

EMA: 15990422

Player page

Internal rating (RR)

Rating date Sept. 3, 2025 (latest changes Sept. 3, 2025).

48 place (593.09).

max_coefficients = (4.10 * 1 + 3.75 * 1 + 3.50 * 1 + 3.45 * 1) = 14.8

p1 = (981.31 * 4.60 * 0.71 + 63.16 * 3.85 * 0.86 + 325.84 * 3.75 * 1 + 741.94 * 3.10 * 1 + 285.71 * 3.50 * 1 + 746.27 * 4.10 * 1) / (4.60 * 0.71 + 3.85 * 0.86 + 3.75 * 1 + 3.10 * 1 + 3.50 * 1 + 4.10 * 1) = 523.6062744065244

p2 = (981.31 * 4.60 * 0.71 + 746.27 * 4.10 * 1 + 741.94 * 3.10 * 1 + 325.84 * 3.75 * 1) / max_coefficients = 662.5655405405405

score = 523.6062744065244 * 0.5 + 662.5655405405405 * 0.5 = 593.0859074735324

Rating changes

Show

all results
Date Place Points Reason
2025-09-01 51 -> 48 578.50 -> 593.09

SPB Riichi Open 2024: 100% -> 86%
2025-08-31 49 -> 51 578.50
2025-08-04 49 575.35 -> 578.50
2025-08-03 46 -> 49 575.35
2025-07-13 45 -> 46 575.35
2025-07-12 42 -> 45 596.91 -> 575.35

X Russian Championship: 86% -> 71%
2025-07-10 43 -> 42 596.91
2025-06-15 60 -> 43 514.10 -> 596.91

13 bloody tiles: 0% -> 100%
2025-06-11 61 -> 60 514.10
2025-06-09 62 -> 61 514.10

Tournaments

# Base rank Date Place Power Coefficient Type Tournament City
1 746 2025-06-15 18/68 100% 4.10 RR 13 bloody tiles Perm
2 286 2025-05-03 51/71 100% 3.50 RR Riichi over The Volga 2025 Samara
3 742 2025-01-07 9/32 100% 3.10 RR Moscow Open Riichi Marathon Moscow
4 326 2024-10-13 61/90 100% 3.75 RR Moscow Riichi 2024 Moscow
5 63 2024-09-01 90/96 86% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
6 981 2024-05-12 🥉 3/108 71% 4.60 RR X Russian Championship Perm
7 144 2022-06-12 96/112 0% 4.05 RR Moscow Riichi 2022 Moscow
8 979 2021-12-19 🥈 2/48 0% 3.10 RR Agari team tournament Moscow
9 709 2021-11-06 17/56 0% 3.30 RR Kirov Tournament Kirov
10 0 2019-07-21 36/36 0% 3.20 RR Moscow Open Riichi Marathon 2019 Moscow
11 193 2019-05-04 68/84 0% 4.20 EMA Haru Shanten 2019 Perm