Kozlovskaya Yana

From Saint Petersburg, Russia

EMA: 15020050

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Internal rating (RR)

Rating date July 10, 2025 (latest changes July 10, 2025).

158 place (245.33).

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

p1 = (401.87 * 4 * 0.14 + 500 * 2.10 * 0.71 + 379.75 * 3.65 * 1 + 189.47 * 3.85 * 1 + 0) / (4 * 0.14 + 2.10 * 0.71 + 3.65 * 1 + 3.85 * 1 + 1) = 292.7911778978265

p2 = (379.75 * 3.65 * 1 + 500 * 2.10 * 0.71 + 189.47 * 3.85 * 1 + 401.87 * 4 * 0.14) / max_coefficients = 197.8742745798988

score = 292.7911778978265 * 0.5 + 197.8742745798988 * 0.5 = 245.33272623886268

Rating changes

Show

all results
Date Place Points Reason
2025-07-10 159 -> 158 245.33
2025-07-03 152 -> 159 255.47 -> 245.33

SPB Riichi Open 2023: 29% -> 14%
2025-06-15 141 -> 152 258.61 -> 255.47
2025-06-11 140 -> 141 280.09 -> 258.61

Money can not buy tenpai: 14% -> 0%
2025-06-08 139 -> 140 280.09
2025-05-30 136 -> 139 287.20 -> 280.09

Seihoku spring tournament 2024: 86% -> 71%
2025-05-12 137 -> 136 282.45 -> 287.20
2025-05-03 130 -> 137 291.09 -> 282.45

SPB Riichi Open 2023: 43% -> 29%
2025-04-26 127 -> 130 291.09
2025-04-11 128 -> 127 296.61 -> 291.09

Money can not buy tenpai: 29% -> 14%

Tournaments

# Base rank Date Place Power Coefficient Type Tournament City
1 189 2024-09-01 78/96 100% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
2 380 2024-08-04 50/80 100% 3.65 RR Riichi over Volga Samara
3 500 2024-03-30 24/47 71% 2.10 RR Seihoku spring tournament 2024 Saint Petersburg
4 402 2023-09-03 65/108 14% 4.00 RR SPB Riichi Open 2023 Saint Petersburg
5 598 2023-06-11 36/88 0% 3.75 RR Money can not buy tenpai Perm
6 550 2022-06-12 51/112 0% 4.05 RR Moscow Riichi 2022 Moscow
7 687 2022-03-20 22/68 0% 3.50 RR Tenpai can't buy happiness Perm
8 277 2021-12-19 35/48 0% 3.10 RR Agari team tournament Moscow
9 907 2021-11-28 8/76 0% 3.45 RR Saint Petersburg Open 2021 Saint Petersburg
10 527 2021-11-06 27/56 0% 3.30 RR Kirov Tournament Kirov
11 1000 2020-03-08 🥇 1/40 0% 2.90 EMA Big open chiitoitsu in a small tenpai Kirov
12 871 2020-01-26 5/32 0% 2.70 RR The last chance: back to 2019 Moscow
13 162 2019-12-15 94/112 0% 4.05 EMA VIII Russian Riichi Championship Moscow
14 810 2019-11-24 13/64 0% 3.45 EMA Saint Petersburg Open 2019 Saint Petersburg
15 73 2019-10-20 52/56 0% 3.03 EMA Tri Nitro Tournament 2019 - 7th Detonation Paris
16 481 2019-09-08 15/28 0% 2.60 RR And yet the sinner collects tanyao Kirov
17 630 2019-08-25 11/28 0% 2.30 EMA Riichi Open Bratislava 2019 Bratislava
18 143 2019-07-21 31/36 0% 3.20 RR Moscow Open Riichi Marathon 2019 Moscow
19 872 2019-06-02 6/40 0% 2.90 RR Summer Cup 2019 Saint Petersburg
20 964 2019-05-04 4/84 0% 4.20 EMA Haru Shanten 2019 Perm
21 826 2019-03-09 5/24 0% 2.50 RR Toi-Toi-man Tournament Kirov
22 526 2019-02-10 10/20 0% 2.10 RR Fuyu Shanten 2019 Perm
23 604 2018-11-18 37/92 0% 3.80 EMA VII Russian Riichi Championship "Aki Shanten" Perm
24 481 2018-07-15 15/28 0% 3.00 RR Moscow Open Riichi Marathon Moscow
25 42 2018-06-11 69/72 0% 3.55 EMA RCR Saint Petersburg South Cup 2018 Saint Petersburg
26 380 2018-05-01 45/72 0% 3.85 EMA Haru Shanten 2018 Perm
27 222 2018-02-17 22/28 0% 1.70 RR Fuyu Shanten Perm
28 789 2017-12-24 5/20 0% 2.10 EMA Tyumen Riichi Open 2017 Tyumen
29 423 2017-11-12 42/72 0% 3.25 EMA Perm Riichi 2017 Aki Shanten Perm
30 677 2017-06-03 11/32 0% 1.60 RR "Summer shanten" tournament, Perm 2017 Perm
31 452 2017-04-16 18/32 0% 2.20 RR Second riichi mahjong tournament, Chelyabinsk 2017 Chelyabinsk
32 1000 2017-03-25 🥇 1/28 0% 1.50 RR "Spring shanten" tournament, Perm 2017 Perm
33 714 2017-01-05 11/36 0% 2.50 RR Quick discard 2017 Novosibirsk
34 516 2016-05-03 16/32 0% 2.40 RR Siberia Cup 2016 Novosibirsk