Petrushin Ivan

From Irkutsk, Russia

Player page

Common russian riichi rating (CRR)

Rating date July 15, 2024 (latest changes July 14, 2024).

170 place (114.46).

max_coefficients = (4.60 * 1 + 4 * 1 + 3.75 * 0.86 + 3.05 * 1) = 14.864125000000001

p1 = (272.73 * 1.10 * 0.43 + 866.67 * 1 * 0.71 + 0 + 0 + 0) / (1.10 * 0.43 + 1 * 0.71 + 1 + 1 + 1) = 178.61511410114292

p2 = (866.67 * 1 * 0.71 + 272.73 * 1.10 * 0.43) / max_coefficients = 50.29828530101839

score = 178.61511410114292 * 0.5 + 50.29828530101839 * 0.5 = 114.45669970108065

Rating changes

Show

Date Place Points Reason
2024-07-14 170 117.60 -> 114.46

Survive after yakuman: 57% -> 43%

2024-07-09 171 -> 170 117.60
2024-07-01 170 -> 171 132.66 -> 117.60

Spring Tournament Irkutsk 2023: 86% -> 71%

2024-06-25 171 -> 170 132.66
2024-06-20 172 -> 171 132.66
2024-06-11 182 -> 172 131.59 -> 132.66
2024-06-09 175 -> 182 131.59
2024-05-25 171 -> 175 131.59
2024-05-19 169 -> 171 131.59
2024-05-14 169 134.15 -> 131.59

Survive after yakuman: 71% -> 57%

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 867 2023-05-01 3/16 71% 1.00 CRR Spring Tournament Irkutsk 2023
2 273 2023-01-14 9/12 43% 1.10 CRR Survive after yakuman
3 0 2022-01-05 16/16 0% 1.20 CRR Winter tournament
4 727 2021-07-03 4/12 0% 1.10 CRR Summer tournament
5 133 2021-01-03 14/16 0% 1.20 CRR Winter tournament
6 158 2019-12-15 17/20 0% 1.30 CRR Irkutsk Winter Tournament 2019