Petrushin Ivan

From Irkutsk, Russia

Player page

Common russian riichi rating (CRR)

Rating date June 11, 2024 (latest changes June 11, 2024).

171 place (132.66).

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

p1 = (866.67 * 1 * 0.86 + 272.73 * 1.10 * 0.57 + 0 + 0 + 0) / (1 * 0.86 + 1.10 * 0.57 + 1 + 1 + 1) = 203.81484024576204

p2 = (866.67 * 1 * 0.86 + 272.73 * 1.10 * 0.57) / max_coefficients = 61.50647952704918

score = 203.81484024576204 * 0.5 + 61.50647952704918 * 0.5 = 132.6606598864056

Rating changes

Show

Date Place Points Reason
2024-06-11 181 -> 171 131.59 -> 132.66
2024-06-09 174 -> 181 131.59
2024-05-25 170 -> 174 131.59
2024-05-19 168 -> 170 131.59
2024-05-14 168 134.15 -> 131.59

Survive after yakuman: 71% -> 57%

2024-05-12 157 -> 168 138.01 -> 134.15
2024-05-05 156 -> 157 138.01
2024-05-01 148 -> 156 152.39 -> 138.01

Spring Tournament Irkutsk 2023: 100% -> 86%

2024-04-27 149 -> 148 152.39
2024-04-20 150 -> 149 152.39

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 867 2023-05-01 3/16 86% 1.00 CRR Spring Tournament Irkutsk 2023
2 273 2023-01-14 9/12 57% 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