Astafev Mikhail

From Yekaterinburg, Russia

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Common russian riichi rating (CRR)

Rating date Aug. 4, 2025 (latest changes Aug. 4, 2025).

122 place (384.56).

max_coefficients = (4.10 * 1 + 3.85 * 1 + 3.75 * 1 + 3.50 * 1) = 15.2

p1 = (368.42 * 2.10 * 0.14 + 252.34 * 4 * 0.14 + 592.59 * 2.30 * 0.29 + 629.63 * 2.30 * 0.57 + 333.33 * 1.60 * 0.71 + 212.77 * 2.80 * 0.86 + 202.53 * 3.65 * 0.86 + 354.84 * 2.40 * 1 + 716.42 * 4.10 * 1) / (2.10 * 0.14 + 4 * 0.14 + 2.30 * 0.29 + 2.30 * 0.57 + 1.60 * 0.71 + 2.80 * 0.86 + 3.65 * 0.86 + 2.40 * 1 + 4.10 * 1) = 423.73406843116373

p2 = (716.42 * 4.10 * 1 + 354.84 * 2.40 * 1 + 629.63 * 2.30 * 0.57 + 202.53 * 3.65 * 0.86) / max_coefficients = 345.3940789473685

score = 423.73406843116373 * 0.5 + 345.3940789473685 * 0.5 = 384.56407368926614

Rating changes

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all results
Date Place Points Reason
2025-08-04 123 -> 122 382.83 -> 384.56

Riichi over Volga: 100% -> 86%
2025-08-03 121 -> 123 382.83
2025-07-26 120 -> 121 382.83
2025-07-19 121 -> 120 382.83
2025-07-14 126 -> 121 380.42 -> 382.83

Guardian of the Winds: 100% -> 86%
2025-07-13 122 -> 126 380.42
2025-07-12 124 -> 122 377.16 -> 380.42

X Russian Championship: 86% -> 71%
2025-07-05 123 -> 124 378.34 -> 377.16

Akademgorodok: Riichi Mahjong Tournament 2024: 86% -> 71%

Finding Dora: 43% -> 29%
2025-07-03 128 -> 123 375.78 -> 378.34

SPB Riichi Open 2023: 29% -> 14%
2025-06-27 128 375.45 -> 375.78

13 tiles until tempai: 29% -> 14%

Tournaments

# Base rank Date Place Power Coefficient Type 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 86% 3.65 RR Riichi over Volga Samara
4 213 2024-07-14 38/48 86% 2.80 RR Guardian of the Winds Yekaterinburg
5 103 2024-05-12 97/108 71% 4.60 RR X Russian Championship Perm
6 333 2024-05-05 11/16 71% 1.60 CRR Akademgorodok: Riichi Mahjong Tournament 2024 Novosibirsk
7 630 2024-02-25 11/28 57% 2.30 CRR Chasing Kan Yekaterinburg
8 593 2023-11-05 12/28 29% 2.30 CRR Finding Dora Yekaterinburg
9 252 2023-09-03 81/108 14% 4.00 RR SPB Riichi Open 2023 Saint Petersburg
10 368 2023-08-27 13/20 14% 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