Petrushin Ivan

From Irkutsk, Russia

Player page

Common russian riichi rating (CRR)

Rating date Dec. 18, 2023 (latest changes Dec. 18, 2023).

147 place (177.50).

max_coefficients = (4 * 1 + 3.75 * 1 + 4.20 * 0.86 + 2.90 * 1) = 14.249820000000001

p1 = (866.67 * 1 * 1 + 0 * 1.20 * 0.14 + 272.73 * 1.10 * 1 + 0 + 0) / (1 * 1 + 1.20 * 0.14 + 1.10 * 1 + 1 + 1) = 273.1301562924326

p2 = (866.67 * 1 * 1 + 272.73 * 1.10 * 1 + 0 * 1.20 * 0.14) / max_coefficients = 81.87261312774477

score = 273.1301562924326 * 0.5 + 81.87261312774477 * 0.5 = 177.5013847100887

Rating changes

Show

all results
Date Place Points Reason
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
2023-11-06 154 -> 152 176.11 -> 177.79
2023-11-05 150 -> 154 170.85 -> 176.11

Winter tournament: 29% -> 14%
2023-10-27 151 -> 150 170.85
2023-10-22 149 -> 151 170.85
2023-10-19 151 -> 149 170.85

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 9/12 100% 1.10 CRR Survive after yakuman
3 0 2022-01-05 16/16 14% 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