Astafev Mikhail

From Yekaterinburg, Russia

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Common russian riichi rating (CRR)

Rating date Aug. 31, 2026 (latest changes Aug. 31, 2026).

157 place (363.74).

max_coefficients = (4.71 * 1 + 3.90 * 1 + 3.40 * 1 + 3.40 * 1) = 15.41

p1 = (354.84 * 2.40 * 0.57 + 716.42 * 4.10 * 0.71 + 542.86 * 2.50 * 1 + 209.79 * 4.71 * 1 + 258.06 * 2.40 * 1) / (2.40 * 0.57 + 4.10 * 0.71 + 2.50 * 1 + 4.71 * 1 + 2.40 * 1) = 398.9456498530912

p2 = (716.42 * 4.10 * 0.71 + 542.86 * 2.50 * 1 + 209.79 * 4.71 * 1 + 258.06 * 2.40 * 1) / max_coefficients = 328.534717715769

score = 398.9456498530912 * 0.5 + 328.534717715769 * 0.5 = 363.7401837844301

Rating changes

Show

all results
Date Place Points Reason
2026-08-31 157 363.21 -> 363.74
2026-08-30 154 -> 157 363.21
2026-08-16 151 -> 154 363.21
2026-08-15 142 -> 151 381.89 -> 363.21

13 bloody tiles: 86% -> 71%
2026-08-13 143 -> 142 381.89
2026-08-04 144 -> 143 378.25 -> 381.89

Riichi over Volga: 14% -> 0%
2026-08-02 143 -> 144 378.25
2026-07-26 145 -> 143 378.25
2026-07-23 146 -> 145 378.25
2026-07-18 145 -> 146 378.25

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 258 2026-07-12 24/32 100% 2.40 RR Poplar fluff. Mahjong. July. Yekaterinburg
2 210 2026-06-14 114/144 100% 4.71 RR XII Russian Championship Samara
3 543 2026-04-19 17/36 100% 2.50 CRR Akademgorodok Riichi Mahjong Tournament 2026 Novosibirsk
4 716 2025-06-15 20/68 71% 4.10 RR 13 bloody tiles Perm
5 355 2025-03-02 21/32 57% 2.40 RR Riichi Maslenitsa (shrovetide) Yekaterinburg
6 203 2024-08-04 64/80 0% 3.65 RR Riichi over Volga Samara
7 213 2024-07-14 38/48 0% 2.80 RR Guardian of the Winds Yekaterinburg
8 103 2024-05-12 97/108 0% 4.60 RR X Russian Championship Perm
9 333 2024-05-05 11/16 0% 1.60 CRR Akademgorodok: Riichi Mahjong Tournament 2024 Novosibirsk
10 630 2024-02-25 11/28 0% 2.30 CRR Chasing Kan Yekaterinburg
11 593 2023-11-05 12/28 0% 2.30 CRR Finding Dora Yekaterinburg
12 252 2023-09-03 81/108 0% 4.00 RR SPB Riichi Open 2023 Saint Petersburg
13 368 2023-08-27 13/20 0% 2.10 CRR 13 tiles until tempai Yekaterinburg
14 678 2023-06-11 29/88 0% 3.75 RR Money can not buy tenpai Perm