Tkachenko Maria

From Sarov, Russia

EMA: 15990422

Player page

Internal rating (RR)

Rating date May 6, 2026 (latest changes May 3, 2026).

51 place (567.88).

max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.45 * 1 + 3.40 * 1) = 14.85

p1 = (981.31 * 4.60 * 0.14 + 63.16 * 3.85 * 0.29 + 325.84 * 3.75 * 0.43 + 741.94 * 3.10 * 0.71 + 285.71 * 3.50 * 0.86 + 746.27 * 4.10 * 1 + 833.33 * 3 * 1) / (4.60 * 0.14 + 3.85 * 0.29 + 3.75 * 0.43 + 3.10 * 0.71 + 3.50 * 0.86 + 4.10 * 1 + 3 * 1) = 593.0281914047165

p2 = (746.27 * 4.10 * 1 + 833.33 * 3 * 1 + 741.94 * 3.10 * 0.71 + 285.71 * 3.50 * 0.86) / max_coefficients = 542.7400673400674

score = 593.0281914047165 * 0.5 + 542.7400673400674 * 0.5 = 567.884129372392

Rating changes

Show

all results
Date Place Points Reason
2026-05-03 48 -> 51 566.10 -> 567.88

Riichi over The Volga 2025: 100% -> 86%
2026-05-01 53 -> 48 557.54 -> 566.10

SPB Riichi Open 2024: 43% -> 29%
2026-04-26 52 -> 53 557.54
2026-04-16 51 -> 52 557.54
2026-04-13 56 -> 51 553.81 -> 557.54

Moscow Riichi 2024: 57% -> 43%
2026-04-05 54 -> 56 553.81
2026-04-04 53 -> 54 553.81
2026-04-02 54 -> 53 553.81
2026-03-12 47 -> 54 571.24 -> 553.81

X Russian Championship: 29% -> 14%
2026-03-10 46 -> 47 571.24

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 833 2026-01-07 6/31 100% 3.00 RR Moscow Open Riichi Marathon 2026 Moscow
2 746 2025-06-15 18/68 100% 4.10 RR 13 bloody tiles Perm
3 286 2025-05-03 51/71 86% 3.50 RR Riichi over The Volga 2025 Samara
4 742 2025-01-07 9/32 71% 3.10 RR Moscow Open Riichi Marathon Moscow
5 326 2024-10-13 61/90 43% 3.75 RR Moscow Riichi 2024 Moscow
6 63 2024-09-01 90/96 29% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
7 981 2024-05-12 🥉 3/108 14% 4.60 RR X Russian Championship Perm
8 144 2022-06-12 96/112 0% 4.05 RR Moscow Riichi 2022 Moscow
9 979 2021-12-19 🥈 2/48 0% 3.10 RR Agari team tournament Moscow
10 709 2021-11-06 17/56 0% 3.30 RR Kirov Tournament Kirov
11 0 2019-07-21 36/36 0% 3.20 RR Moscow Open Riichi Marathon 2019 Moscow
12 193 2019-05-04 68/84 0% 4.20 EMA Haru Shanten 2019 Perm