Tkachenko Nikita

From Moscow, Russia

EMA: 15990049

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Internal rating (RR)

Rating date July 25, 2026 (latest changes July 18, 2026).

60 place (555.91).

max_coefficients = (4.71 * 1 + 3.90 * 1 + 4.10 * 0.86 + 3.45 * 1) = 15.574109999999997

p1 = (988.76 * 3.75 * 0.29 + 612.90 * 3.10 * 0.43 + 477.61 * 4.10 * 0.86 + 526.32 * 3.90 * 1 + 666.67 * 3 * 1 + 900 * 3.10 * 1 + 265.73 * 4.71 * 1) / (3.75 * 0.29 + 3.10 * 0.43 + 4.10 * 0.86 + 3.90 * 1 + 3 * 1 + 3.10 * 1 + 4.71 * 1) = 564.6924999799993

p2 = (900 * 3.10 * 1 + 526.32 * 3.90 * 1 + 666.67 * 3 * 1 + 477.61 * 4.10 * 0.86) / max_coefficients = 547.1266094820187

score = 564.6924999799993 * 0.5 + 547.1266094820187 * 0.5 = 555.9095547310089

Rating changes

Show

all results
Date Place Points Reason
2026-07-14 61 -> 60 555.91
2026-07-12 57 -> 61 555.91
2026-07-07 58 -> 57 556.42 -> 555.91

Moscow Open Riichi Marathon: 57% -> 43%
2026-07-02 59 -> 58 556.42
2026-07-01 58 -> 59 556.42
2026-06-15 58 553.96 -> 556.42

13 bloody tiles: 100% -> 86%
2026-06-14 36 -> 58 619.35 -> 553.96

XII Russian Championship: 0% -> 100%
2026-06-13 34 -> 36 624.60 -> 619.35

Moscow Riichi 2024: 43% -> 29%
2026-06-09 35 -> 34 624.60
2026-06-08 36 -> 35 624.60

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 266 2026-06-14 106/144 100% 4.71 RR XII Russian Championship Samara
2 900 2026-04-05 6/51 100% 3.10 RR Moscow Riichi 2026 Moscow
3 667 2026-01-07 11/31 100% 3.00 RR Moscow Open Riichi Marathon 2026 Moscow
4 526 2025-11-04 28/58 100% 3.90 RR XI Russian Championship Moscow
5 478 2025-06-15 36/68 86% 4.10 RR 13 bloody tiles Perm
6 613 2025-01-07 13/32 43% 3.10 RR Moscow Open Riichi Marathon Moscow
7 989 2024-10-13 🥈 2/90 29% 3.75 RR Moscow Riichi 2024 Moscow
8 523 2022-06-12 54/112 0% 4.05 RR Moscow Riichi 2022 Moscow
9 613 2019-12-15 44/112 0% 4.05 EMA VIII Russian Riichi Championship Moscow
10 171 2019-07-21 30/36 0% 3.20 RR Moscow Open Riichi Marathon 2019 Moscow
11 85 2019-01-13 44/48 0% 3.10 RR Agari team tournament 2019 Moscow
12 619 2018-12-16 25/64 0% 3.45 EMA White Dragon Tournament Moscow
13 830 2018-08-19 9/48 0% 3.10 RR Moscow Riichi Open 2018 Moscow
14 852 2018-07-15 5/28 0% 3.00 RR Moscow Open Riichi Marathon Moscow
15 662 2018-06-11 25/72 0% 3.55 EMA RCR Saint Petersburg South Cup 2018 Saint Petersburg
16 988 2017-12-11 🥈 2/84 0% 3.40 EMA VI Russian Riichi Championship 2017 Saint Petersburg
17 254 2017-10-22 48/64 0% 3.45 EMA Moscow Riichi Open 2017 Moscow
18 67 2017-10-07 15/16 0% 1.40 RR Red Dragon tournament 2017 Moscow
19 971 2017-07-09 🥈 2/36 0% 3.20 RR Moscow Open Riichi Marathon 2017 Moscow
20 641 2017-03-11 15/40 0% 2.00 RR Moscow championship 2017 (JPML-A rules) Moscow
21 803 2016-12-04 15/72 0% 3.25 EMA Saint Petersburg Riichi Open 2016 Saint Petersburg
22 793 2016-09-11 19/88 0% 3.45 EMA V Russian Riichi Championship 2016 Moscow
23 333 2016-04-17 11/16 0% 1.20 RR Riichi mahjong league tournament 2016 (JPML-A rules) Moscow
24 990 2016-03-13 🥈 2/100 0% 3.40 RR "Japanese House" riichi mahjong cup 2016 Moscow
25 200 2016-02-06 13/16 0% 1.40 RR February tournament glhf; 2016 Moscow
26 196 2015-10-18 42/52 0% 2.90 EMA Russian Open Riichi Championship 2015 Vologda
27 791 2015-03-08 10/44 0% 2.50 EMA Moscow Riichi Championship 2015 Moscow
28 952 2014-12-07 4/64 0% 3.15 EMA Russian Open Riichi Championship 2014 Moscow
29 1000 2014-09-21 🥇 1/64 0% 3.15 RR "Japanese House" riichi mahjong cup 2014 Moscow
30 707 2014-02-15 23/76 0% 2.50 RR Moscow Riichi 2014 Moscow
31 775 2013-12-08 17/72 0% 3.25 EMA Russian Riichi Championship 2013 Moscow
32 618 2013-05-19 22/56 0% 3.00 RR "Japanese House" riichi mahjong cup 2013 Moscow
33 800 2011-04-23 8/36 0% 0.90 EMA Moscow Riichi 2011 Moscow