Zarezin Ivan

From Yekaterinburg, Russia

EMA: 15020003

Player page

Internal rating (RR)

Rating date Aug. 19, 2023 (latest changes Aug. 19, 2023).

56 place (370.77).

max_coefficients = (4.20 * 1 + 3.75 * 1 + 4.05 * 0.71 + 3.50 * 0.57) = 12.842815

p1 = (358.21 * 3.50 * 0.57 + 540.23 * 3.75 * 1 + 440 * 4.20 * 1 + 0 + 0) / (3.50 * 0.57 + 3.75 * 1 + 4.20 * 1 + 1 + 1) = 384.1237165164562

p2 = (540.23 * 3.75 * 1 + 440 * 4.20 * 1 + 358.21 * 3.50 * 0.57) / max_coefficients = 357.41696816468976

score = 384.1237165164562 * 0.5 + 357.41696816468976 * 0.5 = 370.770342340573

Rating changes

Show

all results
Date Place Points Reason
2023-08-19 58 -> 56 370.77
2023-08-12 59 -> 58 363.07 -> 370.77
2023-07-28 61 -> 59 363.07
2023-07-20 60 -> 61 362.84 -> 363.07

Tenpai can't buy happiness: 71% -> 57%
2023-07-06 62 -> 60 362.84
2023-06-19 67 -> 62 343.80 -> 362.84
2021-02-01 82 -> 67 439.90 -> 343.80
2020-02-01 82 439.90

Tournaments

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