Petrushin Ivan

From Irkutsk, Russia

Common russian riichi rating (CRR)

Rating date April 17, 2023 (latest changes April 17, 2023).

136 place (80.68).

max_coefficients = (4.20 * 1 + 4.05 * 1 + 3.50 * 0.86 + 2.80 * 1) = 14.04985

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 = 37.62033046616156

score = 123.74310242705602 * 0.5 + 37.62033046616156 * 0.5 = 80.68171644660879

all results

Date	Place	Points	Reason
2023-03-20	137 -> 136	80.04 -> 80.68
2023-03-05	138 -> 137	77.65 -> 80.04	Winter tournament: 86% -> 71%
2023-03-03	136 -> 138	91.97 -> 77.65	Summer tournament: 43% -> 29%
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

#	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