Petrushin Ivan

From Irkutsk, Russia

Player page

Common russian riichi rating (CRR)

Rating date Feb. 25, 2023 (latest changes Feb. 25, 2023).

136 place (91.97).

max_coefficients = (4.20 * 1 + 4.05 * 1 + 3.50 * 1 + 2.80 * 1) = 14.55

p1 = (727.27 * 1.10 * 0.43 + 0 * 1.20 * 0.86 + 272.73 * 1.10 * 1 + 0 + 0) / (1.10 * 0.43 + 1.20 * 0.86 + 1.10 * 1 + 1 + 1) = 139.75712937882338

p2 = (727.27 * 1.10 * 0.43 + 272.73 * 1.10 * 1 + 0 * 1.20 * 0.86) / max_coefficients = 44.18419243986254

score = 139.75712937882338 * 0.5 + 44.18419243986254 * 0.5 = 91.97066090934297

Rating changes

Show

Date Place Points Reason
2023-02-25 127 -> 136 91.97
2023-01-28 127 91.73 -> 91.97
2023-01-14 130 -> 127 49.75 -> 91.73

Survive after yakuman: 0% -> 100%

2023-01-05 130 48.36 -> 49.75

Winter tournament: 100% -> 86%

2023-01-03 131 -> 130 76.32 -> 48.36

Winter tournament: 14% -> 0%

Summer tournament: 57% -> 43%

2022-12-19 131 76.16 -> 76.32
2022-12-18 129 -> 131 76.16
2022-12-03 177 -> 129 46.10 -> 76.16
2021-02-01 177 46.10

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 273 2023-01-14 9/12 100% 1.10 CRR Survive after yakuman
2 0 2022-01-05 16/16 86% 1.20 CRR Winter tournament
3 727 2021-07-03 4/12 43% 1.10 CRR Summer tournament
4 133 2021-01-03 14/16 0% 1.20 CRR Winter tournament
5 158 2019-12-15 17/20 0% 1.30 CRR Irkutsk Winter Tournament 2019