Astafev Mikhail

From Yekaterinburg, Russia

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Common russian riichi rating (CRR)

Rating date April 20, 2026 (latest changes April 19, 2026).

110 place (418.81).

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

p1 = (333.33 * 1.60 * 0.14 + 102.80 * 4.60 * 0.14 + 212.77 * 2.80 * 0.29 + 202.53 * 3.65 * 0.29 + 354.84 * 2.40 * 0.86 + 716.42 * 4.10 * 1 + 542.86 * 2.50 * 1) / (1.60 * 0.14 + 4.60 * 0.14 + 2.80 * 0.29 + 3.65 * 0.29 + 2.40 * 0.86 + 4.10 * 1 + 2.50 * 1) = 487.4112764293372

p2 = (716.42 * 4.10 * 1 + 542.86 * 2.50 * 1 + 354.84 * 2.40 * 0.86 + 202.53 * 3.65 * 0.29) / max_coefficients = 350.2053511705686

score = 487.4112764293372 * 0.5 + 350.2053511705686 * 0.5 = 418.8083137999529

Rating changes

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all results
Date Place Points Reason
2026-04-19 135 -> 110 371.31 -> 418.81

Akademgorodok Riichi Mahjong Tournament 2026: 0% -> 100%
2026-04-16 137 -> 135 371.31
2026-04-13 136 -> 137 371.31
2026-04-11 135 -> 136 371.31
2026-04-09 136 -> 135 371.31
2026-04-05 134 -> 136 371.31
2026-04-04 137 -> 134 367.38 -> 371.31

Riichi over Volga: 43% -> 29%
2026-03-21 135 -> 137 367.38
2026-03-19 136 -> 135 367.38
2026-03-14 131 -> 136 365.25 -> 367.38

Guardian of the Winds: 43% -> 29%

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 543 2026-04-19 17/36 100% 2.50 CRR Akademgorodok Riichi Mahjong Tournament 2026 Novosibirsk
2 716 2025-06-15 20/68 100% 4.10 RR 13 bloody tiles Perm
3 355 2025-03-02 21/32 86% 2.40 RR Riichi Maslenitsa (shrovetide) Yekaterinburg
4 203 2024-08-04 64/80 29% 3.65 RR Riichi over Volga Samara
5 213 2024-07-14 38/48 29% 2.80 RR Guardian of the Winds Yekaterinburg
6 103 2024-05-12 97/108 14% 4.60 RR X Russian Championship Perm
7 333 2024-05-05 11/16 14% 1.60 CRR Akademgorodok: Riichi Mahjong Tournament 2024 Novosibirsk
8 630 2024-02-25 11/28 0% 2.30 CRR Chasing Kan Yekaterinburg
9 593 2023-11-05 12/28 0% 2.30 CRR Finding Dora Yekaterinburg
10 252 2023-09-03 81/108 0% 4.00 RR SPB Riichi Open 2023 Saint Petersburg
11 368 2023-08-27 13/20 0% 2.10 CRR 13 tiles until tempai Yekaterinburg
12 678 2023-06-11 29/88 0% 3.75 RR Money can not buy tenpai Perm