Matrosova Natalia

From Yekaterinburg, Russia

EMA: 15020064

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Internal rating (RR)

Rating date April 11, 2025 (latest changes April 11, 2025).

140 place (264.24).

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

p1 = (195.40 * 3.75 * 0.14 + 411.21 * 4 * 0.43 + 242.99 * 4.60 * 1 + 489.36 * 2.80 * 1 + 303.80 * 3.65 * 1 + 0 * 3.85 * 1 + 258.06 * 2.40 * 1) / (3.75 * 0.14 + 4 * 0.43 + 4.60 * 1 + 2.80 * 1 + 3.65 * 1 + 3.85 * 1 + 2.40 * 1) = 257.0746447300614

p2 = (489.36 * 2.80 * 1 + 242.99 * 4.60 * 1 + 303.80 * 3.65 * 1 + 411.21 * 4 * 0.43) / max_coefficients = 271.40820189274444

score = 257.0746447300614 * 0.5 + 271.40820189274444 * 0.5 = 264.2414233114029

Rating changes

Show

all results
Date Place Points Reason
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%
2025-03-02 135 -> 140 273.09 -> 272.98

Riichi Maslenitsa (shrovetide): 0% -> 100%
2025-02-16 128 -> 135 273.09
2025-02-11 131 -> 128 272.17 -> 273.09

Money can not buy tenpai: 43% -> 29%
2025-02-02 124 -> 131 272.17
2025-01-26 118 -> 124 272.17
2025-01-07 114 -> 118 272.17
2025-01-03 112 -> 114 281.85 -> 272.17

SPB Riichi Open 2023: 71% -> 57%
2024-12-11 114 -> 112 280.94 -> 281.85

Money can not buy tenpai: 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 82/108 100% 4.60 RR X Russian Championship Perm
6 411 2023-09-03 64/108 43% 4.00 RR SPB Riichi Open 2023 Saint Petersburg
7 195 2023-06-11 71/88 14% 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