Matrosova Natalia

From Yekaterinburg, Russia

EMA: 15020064

Player page

Internal rating (RR)

Rating date Aug. 9, 2025 (latest changes Aug. 9, 2025).

165 place (237.33).

max_coefficients = (4.10 * 1 + 3.85 * 1 + 3.75 * 1 + 3.50 * 1) = 15.2

p1 = (411.21 * 4 * 0.14 + 242.99 * 4.60 * 0.71 + 489.36 * 2.80 * 0.86 + 303.80 * 3.65 * 0.86 + 0 * 3.85 * 1 + 258.06 * 2.40 * 1) / (4 * 0.14 + 4.60 * 0.71 + 2.80 * 0.86 + 3.65 * 0.86 + 3.85 * 1 + 2.40 * 1) = 241.60261709200276

p2 = (489.36 * 2.80 * 0.86 + 303.80 * 3.65 * 0.86 + 242.99 * 4.60 * 0.71 + 258.06 * 2.40 * 1) / max_coefficients = 233.06381578947367

score = 241.60261709200276 * 0.5 + 233.06381578947367 * 0.5 = 237.33321644073823

Rating changes

Show

all results
Date Place Points Reason
2025-08-04 162 -> 165 242.36 -> 237.33

Riichi over Volga: 100% -> 86%
2025-08-03 156 -> 162 242.36
2025-07-30 160 -> 156 242.36
2025-07-14 155 -> 160 251.71 -> 242.36

Guardian of the Winds: 100% -> 86%
2025-07-13 153 -> 155 251.71
2025-07-12 150 -> 153 254.31 -> 251.71

X Russian Championship: 86% -> 71%
2025-07-03 150 256.91 -> 254.31

SPB Riichi Open 2023: 29% -> 14%
2025-06-15 140 -> 150 260.75 -> 256.91
2025-06-11 148 -> 140 259.89 -> 260.75

Money can not buy tenpai: 14% -> 0%
2025-06-08 147 -> 148 259.89

Tournaments

# Base rank Date Place Power Coefficient Type Tournament City
1 258 2025-03-02 24/32 100% 2.40 RR Riichi Maslenitsa (shrovetide) Yekaterinburg
2 0 2024-09-01 96/96 100% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
3 304 2024-08-04 56/80 86% 3.65 RR Riichi over Volga Samara
4 489 2024-07-14 25/48 86% 2.80 RR Guardian of the Winds Yekaterinburg
5 243 2024-05-12 82/108 71% 4.60 RR X Russian Championship Perm
6 411 2023-09-03 64/108 14% 4.00 RR SPB Riichi Open 2023 Saint Petersburg
7 195 2023-06-11 71/88 0% 3.75 RR Money can not buy tenpai Perm
8 672 2022-03-20 23/68 0% 3.50 RR Tenpai can't buy happiness Perm
9 609 2019-06-16 10/24 0% 2.20 RR URAL Mahjong Battle Yekaterinburg
10 211 2018-05-01 57/72 0% 3.85 EMA Haru Shanten 2018 Perm
11 70 2017-11-12 67/72 0% 3.25 EMA Perm Riichi 2017 Aki Shanten Perm
12 0 2017-07-30 24/24 0% 2.20 RR Summer EMA rules tournament 2017 Yekaterinburg