Matrosova Natalia

From Yekaterinburg, Russia

EMA: 15020064

Player page

Internal rating (RR)

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

150 place (254.31).

max_coefficients = (4.10 * 1 + 4.60 * 0.86 + 3.85 * 1 + 3.75 * 1) = 15.64266

p1 = (411.21 * 4 * 0.14 + 242.99 * 4.60 * 0.86 + 489.36 * 2.80 * 1 + 303.80 * 3.65 * 1 + 0 * 3.85 * 1 + 258.06 * 2.40 * 1) / (4 * 0.14 + 4.60 * 0.86 + 2.80 * 1 + 3.65 * 1 + 3.85 * 1 + 2.40 * 1) = 249.29912758375906

p2 = (489.36 * 2.80 * 1 + 303.80 * 3.65 * 1 + 242.99 * 4.60 * 0.86 + 258.06 * 2.40 * 1) / max_coefficients = 259.31970649493115

score = 249.29912758375906 * 0.5 + 259.31970649493115 * 0.5 = 254.3094170393451

Rating changes

Show

all results
Date Place Points Reason
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
2025-05-30 149 -> 147 259.89
2025-05-12 148 -> 149 259.22 -> 259.89

X Russian Championship: 100% -> 86%
2025-05-03 142 -> 148 264.24 -> 259.22

SPB Riichi Open 2023: 43% -> 29%
2025-04-26 140 -> 142 264.24
2025-04-11 140 263.42 -> 264.24

Money can not buy tenpai: 29% -> 14%
2025-03-03 140 272.98 -> 263.42

SPB Riichi Open 2023: 57% -> 43%

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 56/80 100% 3.65 RR Riichi over Volga Samara
4 489 2024-07-14 25/48 100% 2.80 RR Guardian of the Winds Yekaterinburg
5 243 2024-05-12 82/108 86% 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