Astafev Mikhail

Common russian riichi rating (CRR)

Rating date Jan. 8, 2026 (latest changes Jan. 7, 2026).

141 place (349.78).

max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95

p1 = (629.63 * 2.30 * 0.14 + 333.33 * 1.60 * 0.29 + 102.80 * 4.60 * 0.43 + 212.77 * 2.80 * 0.57 + 202.53 * 3.65 * 0.57 + 354.84 * 2.40 * 1 + 716.42 * 4.10 * 1) / (2.30 * 0.14 + 1.60 * 0.29 + 4.60 * 0.43 + 2.80 * 0.57 + 3.65 * 0.57 + 2.40 * 1 + 4.10 * 1) = 395.0990815027259

p2 = (716.42 * 4.10 * 1 + 354.84 * 2.40 * 1 + 202.53 * 3.65 * 0.57 + 212.77 * 2.80 * 0.57) / max_coefficients = 304.46354515050166

score = 395.0990815027259 * 0.5 + 304.46354515050166 * 0.5 = 349.78131332661377

Rating changes

Show

all results

Date	Place	Points	Reason
2026-01-05	141	349.25 -> 349.78	Akademgorodok: Riichi Mahjong Tournament 2024: 43% -> 29%
2026-01-03	139 -> 141	349.25
2026-01-01	142 -> 139	349.25
2025-12-27	137 -> 142	349.25
2025-12-25	133 -> 137	354.56 -> 349.25	Chasing Kan: 29% -> 14%
2025-12-13	134 -> 133	354.56
2025-12-07	129 -> 134	354.56
2025-12-06	128 -> 129	354.56
2025-12-04	131 -> 128	354.43 -> 354.56	Riichi over Volga: 71% -> 57%
2025-11-22	129 -> 131	354.43

Tournaments

#	Base rank	Date	Place	Power	Coefficient	Rating	Tournament	City
1	716	2025-06-15	20/68	100%	4.10	RR	13 bloody tiles	Perm
2	355	2025-03-02	21/32	100%	2.40	RR	Riichi Maslenitsa (shrovetide)	Yekaterinburg
3	203	2024-08-04	64/80	57%	3.65	RR	Riichi over Volga	Samara
4	213	2024-07-14	38/48	57%	2.80	RR	Guardian of the Winds	Yekaterinburg
5	103	2024-05-12	97/108	43%	4.60	RR	X Russian Championship	Perm
6	333	2024-05-05	11/16	29%	1.60	CRR	Akademgorodok: Riichi Mahjong Tournament 2024	Novosibirsk
7	630	2024-02-25	11/28	14%	2.30	CRR	Chasing Kan	Yekaterinburg
8	593	2023-11-05	12/28	0%	2.30	CRR	Finding Dora	Yekaterinburg
9	252	2023-09-03	81/108	0%	4.00	RR	SPB Riichi Open 2023	Saint Petersburg
10	368	2023-08-27	13/20	0%	2.10	CRR	13 tiles until tempai	Yekaterinburg
11	678	2023-06-11	29/88	0%	3.75	RR	Money can not buy tenpai	Perm