Zarezin Ivan

From Yekaterinburg, Russia

EMA: 15020003

Player page

Internal rating (RR)

Rating date Nov. 1, 2025 (latest changes Nov. 1, 2025).

88 place (441.10).

max_coefficients = (4.10 * 1 + 3.50 * 1 + 3.45 * 1 + 3.25 * 1) = 14.3

p1 = (401.87 * 4.60 * 0.57 + 808.51 * 2.80 * 0.71 + 873.42 * 3.65 * 0.71 + 0 + 0) / (4.60 * 0.57 + 2.80 * 0.71 + 3.65 * 0.71 + 1 + 1) = 536.0203775035393

p2 = (873.42 * 3.65 * 0.71 + 808.51 * 2.80 * 0.71 + 401.87 * 4.60 * 0.57) / max_coefficients = 346.1895104895105

score = 536.0203775035393 * 0.5 + 346.1895104895105 * 0.5 = 441.10494399652487

Rating changes

Show

all results
Date Place Points Reason
2025-11-01 90 -> 88 440.50 -> 441.10
2025-10-13 91 -> 90 435.26 -> 440.50
2025-10-09 92 -> 91 435.26
2025-10-04 84 -> 92 459.65 -> 435.26

Riichi over Volga: 86% -> 71%
2025-09-30 86 -> 84 459.65
2025-09-14 79 -> 86 475.58 -> 459.65

Guardian of the Winds: 86% -> 71%
2025-09-12 80 -> 79 479.57 -> 475.58

X Russian Championship: 71% -> 57%
2025-09-10 81 -> 80 479.57
2025-09-03 84 -> 81 479.57
2025-09-01 83 -> 84 474.25 -> 479.57

Tournaments

# Base rank Date Place Power Coefficient Type Tournament City
1 873 2024-08-04 11/80 71% 3.65 RR Riichi over Volga Samara
2 809 2024-07-14 10/48 71% 2.80 RR Guardian of the Winds Yekaterinburg
3 402 2024-05-12 65/108 57% 4.60 RR X Russian Championship Perm
4 540 2023-06-11 41/88 0% 3.75 RR Money can not buy tenpai Perm
5 440 2022-11-06 43/76 0% 4.20 RR IX Russian Riichi Championship Perm
6 358 2022-03-20 44/68 0% 3.50 RR Tenpai can't buy happiness Perm
7 984 2019-11-04 🥈 2/64 0% 3.85 EMA Aki Shanten 2019 Perm
8 174 2019-06-16 20/24 0% 2.20 RR URAL Mahjong Battle Yekaterinburg
9 84 2019-05-04 77/84 0% 4.20 EMA Haru Shanten 2019 Perm
10 473 2019-01-05 30/56 0% 3.00 EMA Snow Dragon Novosibirsk
11 363 2018-11-18 59/92 0% 3.80 EMA VII Russian Riichi Championship "Aki Shanten" Perm
12 704 2018-08-11 9/28 0% 1.70 RR Natsu Shanten 2018 Perm
13 479 2018-05-01 38/72 0% 3.85 EMA Haru Shanten 2018 Perm
14 366 2017-11-12 46/72 0% 3.25 EMA Perm Riichi 2017 Aki Shanten Perm
15 261 2017-07-30 18/24 0% 2.20 RR Summer EMA rules tournament 2017 Yekaterinburg
16 741 2017-06-11 8/28 0% 2.10 RR Tyumen Mahjong Tournament (TMT) 2017 Tyumen
17 111 2017-03-25 25/28 0% 1.50 RR "Spring shanten" tournament, Perm 2017 Perm
18 696 2017-01-29 8/24 0% 2.20 RR The first tournament of 2017 Yekaterinburg
19 543 2017-01-05 17/36 0% 2.50 RR Quick discard 2017 Novosibirsk
20 600 2016-07-17 7/16 0% 1.60 RR "Legendary player" riichi mahjong tournament 2016 Tyumen
21 484 2016-05-03 17/32 0% 2.40 RR Siberia Cup 2016 Novosibirsk
22 384 2016-03-13 62/100 0% 3.40 RR "Japanese House" riichi mahjong cup 2016 Moscow
23 947 2016-02-07 🥈 2/20 0% 1.70 RR "Tiles, doras, 2 renchans" Tyumen
24 478 2015-12-05 13/24 0% 1.80 RR 4 riichi mahjong tournament 2015 Yekaterinburg
25 667 2015-10-18 18/52 0% 2.90 EMA Russian Open Riichi Championship 2015 Vologda
26 421 2015-09-27 12/20 0% 1.70 RR Plitochka Tyumen
27 1000 2015-08-29 🥇 1/16 0% 1.60 RR 3 riichi mahjong tournament 2015 Yekaterinburg
28 333 2015-05-16 11/16 0% 1.60 RR 2 autumn riichi mahjong tournament 2015 Yekaterinburg
29 889 2015-02-22 4/28 0% 1.90 RR 2 winter riichi mahjong tournament 2015 Yekaterinburg
30 895 2014-10-25 🥉 3/20 0% 1.30 RR Autumn riichi mahjong tournament 2014 Yekaterinburg
31 158 2014-06-08 17/20 0% 1.30 RR Chelyabinsk riichi mahjong championship 2017 Chelyabinsk