Petrushin Ivan

From Irkutsk, Russia

Player page

Common russian riichi rating (CRR)

Rating date Jan. 20, 2024 (latest changes Jan. 20, 2024).

145 place (154.84).

max_coefficients = (4 * 1 + 3.75 * 1 + 4.20 * 0.71 + 2.90 * 1) = 13.650060000000002

p1 = (866.67 * 1 * 1 + 272.73 * 1.10 * 0.86 + 0 + 0 + 0) / (1 * 1 + 1.10 * 0.86 + 1 + 1 + 1) = 227.3605499705633

p2 = (866.67 * 1 * 1 + 272.73 * 1.10 * 0.86) / max_coefficients = 82.32930844260024

score = 227.3605499705633 * 0.5 + 82.32930844260024 * 0.5 = 154.84492920658178

Rating changes

Show

all results
Date Place Points Reason
2024-01-20 147 -> 145 154.84
2024-01-14 147 157.11 -> 154.84

Survive after yakuman: 100% -> 86%
2024-01-06 147 155.32 -> 157.11
2024-01-05 140 -> 147 177.50 -> 155.32

Winter tournament: 14% -> 0%
2023-12-19 147 -> 140 177.50
2023-12-12 149 -> 147 177.50
2023-11-28 154 -> 149 177.50
2023-11-26 149 -> 154 177.79 -> 177.50
2023-11-20 151 -> 149 177.79
2023-11-09 152 -> 151 177.79

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 867 2023-05-01 3/16 100% 1.00 CRR Spring Tournament Irkutsk 2023
2 273 2023-01-14 9/12 86% 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