Petrov Aleksandr

From Kirov, Russia

EMA: 15990461

Player page

Online rating

Rating date Dec. 17, 2022 (latest changes Dec. 17, 2022).

105 place (270.54).

max_coefficients = (2.80 * 1 + 3.25 * 0.86 + 2.30 * 1) = 7.885574999999999

p1 = (384.62 * 2.60 * 0.14 + 170.21 * 2.60 * 0.86 + 902.91 * 3.45 * 0.43 + 0 + 0) / (2.60 * 0.14 + 2.60 * 0.86 + 3.45 * 0.43 + 1 + 1) = 305.54710158636675

p2 = (902.91 * 3.45 * 0.43 + 170.21 * 2.60 * 0.86 + 384.62 * 2.60 * 0.14) / max_coefficients = 235.53387038992085

score = 305.54710158636675 * 0.5 + 235.53387038992085 * 0.5 = 270.5404859881438

Rating changes

Show

all results
Date Place Points Reason
2022-12-15 106 -> 105 270.54
2022-12-12 107 -> 106 266.19 -> 270.54

Demons of autumn wind: 100% -> 86%
2022-11-25 109 -> 107 266.19
2022-11-21 112 -> 109 266.19
2022-11-16 98 -> 112 314.83 -> 266.19

Riichi Online Open Team Cup: 57% -> 43%
2022-11-14 102 -> 98 307.07 -> 314.83
2022-11-10 103 -> 102 307.07
2022-10-20 101 -> 103 316.44 -> 307.07

Demons of winter wind: 29% -> 14%
2022-10-18 102 -> 101 316.44
2022-09-25 103 -> 102 316.44

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 170 2021-12-12 40/48 86% 2.60 ONLINE Demons of autumn wind
2 903 2021-05-16 11/104 43% 3.45 ONLINE Riichi Online Open Team Cup
3 385 2020-12-20 25/40 14% 2.60 ONLINE Demons of winter wind
4 363 2020-05-24 87/136 0% 3.69 ONLINE Riichi Online Open Team Cup
5 346 2020-05-10 71/108 0% 3.50 ONLINE Spring tournament
6 49 2020-02-16 137/144 0% 3.71 ONLINE Riichi Online Open Team Cup 2020