Petrushin Ivan

From Irkutsk, Russia

Player page

Common russian riichi rating (CRR)

Rating date March 5, 2023 (latest changes March 5, 2023).

138 place (80.04).

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

p1 = (727.27 * 1.10 * 0.29 + 0 * 1.20 * 0.71 + 272.73 * 1.10 * 1 + 0 + 0) / (1.10 * 0.29 + 1.20 * 0.71 + 1.10 * 1 + 1 + 1) = 123.74310242705602

p2 = (272.73 * 1.10 * 1 + 727.27 * 1.10 * 0.29 + 0 * 1.20 * 0.71) / max_coefficients = 36.327147766323016

score = 123.74310242705602 * 0.5 + 36.327147766323016 * 0.5 = 80.03512509668951

Rating changes

Show

all results
Date Place Points Reason
2023-03-05 139 -> 138 77.65 -> 80.04

Winter tournament: 86% -> 71%
2023-03-03 137 -> 139 91.97 -> 77.65

Summer tournament: 43% -> 29%
2023-02-25 128 -> 137 91.97
2023-01-28 128 91.73 -> 91.97
2023-01-14 131 -> 128 49.75 -> 91.73

Survive after yakuman: 0% -> 100%
2023-01-05 131 48.36 -> 49.75

Winter tournament: 100% -> 86%
2023-01-03 132 -> 131 76.32 -> 48.36

Summer tournament: 57% -> 43%

Winter tournament: 14% -> 0%
2022-12-19 132 76.16 -> 76.32
2022-12-18 130 -> 132 76.16
2022-11-28 130 75.79 -> 76.16

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 71% 1.20 CRR Winter tournament
3 727 2021-07-03 4/12 29% 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