Astafev Mikhail

From Yekaterinburg, Russia

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Common russian riichi rating (CRR)

Rating date Jan. 31, 2026 (latest changes Jan. 30, 2026).

138 place (358.09).

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 * 0.29 + 212.77 * 2.80 * 0.43 + 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 * 0.29 + 2.80 * 0.43 + 3.65 * 0.57 + 2.40 * 1 + 4.10 * 1) = 417.3990593738694

p2 = (716.42 * 4.10 * 1 + 354.84 * 2.40 * 1 + 202.53 * 3.65 * 0.57 + 212.77 * 2.80 * 0.43) / max_coefficients = 298.7732441471572

score = 417.3990593738694 * 0.5 + 298.7732441471572 * 0.5 = 358.0861517605133

Rating changes

Show

all results
Date Place Points Reason
2026-01-25 137 -> 138 358.09
2026-01-14 137 357.60 -> 358.09

Guardian of the Winds: 57% -> 43%
2026-01-12 146 -> 137 349.78 -> 357.60

X Russian Championship: 43% -> 29%
2026-01-07 141 -> 146 349.78
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

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 43% 2.80 RR Guardian of the Winds Yekaterinburg
5 103 2024-05-12 97/108 29% 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