Petrushin Ivan

From Irkutsk, Russia

Player page

Common russian riichi rating (CRR)

Rating date May 6, 2024 (latest changes May 6, 2024).

157 place (138.01).

max_coefficients = (4 * 1 + 3.75 * 1 + 3.05 * 1 + 2.90 * 1) = 13.700000000000001

p1 = (866.67 * 1 * 0.86 + 272.73 * 1.10 * 0.71 + 0 + 0 + 0) / (1 * 0.86 + 1.10 * 0.71 + 1 + 1 + 1) = 206.14797440354266

p2 = (866.67 * 1 * 0.86 + 272.73 * 1.10 * 0.71) / max_coefficients = 69.86204379562044

score = 206.14797440354266 * 0.5 + 69.86204379562044 * 0.5 = 138.00500909958154

Rating changes

Show

Date Place Points Reason
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
2024-04-17 151 -> 150 152.39
2024-04-12 153 -> 151 152.39
2024-03-30 146 -> 153 152.39
2024-03-20 152 -> 146 152.39
2024-03-14 151 -> 152 154.69 -> 152.39

Survive after yakuman: 86% -> 71%

2024-03-10 148 -> 151 156.74 -> 154.69

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 71% 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