Matrosova Natalia

From Yekaterinburg, Russia

EMA: 15020064

Player page

Common russian riichi rating (CRR)

Rating date Aug. 31, 2025 (latest changes Aug. 31, 2025).

158 place (311.46).

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

p1 = (411.21 * 4 * 0.14 + 37.04 * 2.30 * 0.29 + 148.15 * 2.30 * 0.43 + 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 + 610.39 * 3.45 * 1) / (4 * 0.14 + 2.30 * 0.29 + 2.30 * 0.43 + 4.60 * 0.71 + 2.80 * 0.86 + 3.65 * 0.86 + 3.85 * 1 + 2.40 * 1 + 3.45 * 1) = 292.0530195891516

p2 = (610.39 * 3.45 * 1 + 489.36 * 2.80 * 0.86 + 303.80 * 3.65 * 0.86 + 242.99 * 4.60 * 0.71) / max_coefficients = 330.8592105263158

score = 292.0530195891516 * 0.5 + 330.8592105263158 * 0.5 = 311.45611505773365

Rating changes

Show

all results
Date Place Points Reason
2025-08-31 203 -> 158 230.78 -> 311.46

SPB Riichi Open 2025: 0% -> 100%
2025-08-26 198 -> 203 236.02 -> 230.78
2025-08-25 201 -> 198 235.18 -> 236.02

Chasing Kan: 57% -> 43%
2025-08-22 202 -> 201 235.18
2025-08-09 203 -> 202 235.18
2025-08-04 201 -> 203 240.15 -> 235.18

Riichi over Volga: 100% -> 86%
2025-08-03 195 -> 201 240.15
2025-07-30 198 -> 195 240.15
2025-07-26 196 -> 198 240.15
2025-07-19 197 -> 196 240.15

Tournaments

# Base rank Date Place Power Coefficient Type Tournament City
1 610 2025-08-31 31/78 100% 3.45 RR SPB Riichi Open 2025 Saint Petersburg
2 258 2025-03-02 24/32 100% 2.40 RR Riichi Maslenitsa (shrovetide) Yekaterinburg
3 0 2024-09-01 96/96 100% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
4 304 2024-08-04 56/80 86% 3.65 RR Riichi over Volga Samara
5 489 2024-07-14 25/48 86% 2.80 RR Guardian of the Winds Yekaterinburg
6 243 2024-05-12 82/108 71% 4.60 RR X Russian Championship Perm
7 148 2024-02-25 24/28 43% 2.30 CRR Chasing Kan Yekaterinburg
8 37 2023-11-05 27/28 29% 2.30 CRR Finding Dora Yekaterinburg
9 411 2023-09-03 64/108 14% 4.00 RR SPB Riichi Open 2023 Saint Petersburg
10 842 2023-08-27 4/20 0% 2.10 CRR 13 tiles until tempai Yekaterinburg
11 195 2023-06-11 71/88 0% 3.75 RR Money can not buy tenpai Perm
12 672 2022-03-20 23/68 0% 3.50 RR Tenpai can't buy happiness Perm
13 609 2019-06-16 10/24 0% 2.20 RR URAL Mahjong Battle Yekaterinburg
14 211 2018-05-01 57/72 0% 3.85 EMA Haru Shanten 2018 Perm
15 70 2017-11-12 67/72 0% 3.25 EMA Perm Riichi 2017 Aki Shanten Perm
16 0 2017-07-30 24/24 0% 2.20 RR Summer EMA rules tournament 2017 Yekaterinburg