Kopylov Dmitry

From Saint Petersburg, Russia

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Internal rating (RR)

Rating date June 1, 2025 (latest changes May 30, 2025).

81 place (463.65).

max_coefficients = (4.60 * 0.86 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.19266

p1 = (205.61 * 4 * 0.29 + 630.43 * 2.10 * 0.71 + 978.95 * 3.85 * 1 + 123.60 * 3.75 * 1 + 423.73 * 3.25 * 1 + 342.86 * 1.90 * 1) / (4 * 0.29 + 2.10 * 0.71 + 3.85 * 1 + 3.75 * 1 + 3.25 * 1 + 1.90 * 1) = 483.44716338710947

p2 = (978.95 * 3.85 * 1 + 423.73 * 3.25 * 1 + 630.43 * 2.10 * 0.71 + 342.86 * 1.90 * 1) / max_coefficients = 443.8439351634276

score = 483.44716338710947 * 0.5 + 443.8439351634276 * 0.5 = 463.64554927526854

Rating changes

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all results
Date Place Points Reason
2025-05-30 75 -> 81 471.27 -> 463.65

Seihoku spring tournament 2024: 86% -> 71%
2025-05-12 78 -> 75 461.81 -> 471.27
2025-05-10 80 -> 78 461.81
2025-05-03 77 -> 80 456.88 -> 461.81

SPB Riichi Open 2023: 43% -> 29%
2025-04-26 76 -> 77 459.78 -> 456.88

Seihoku spring tournament 2025: 0% -> 100%
2025-04-11 78 -> 76 459.78
2025-03-30 73 -> 78 467.14 -> 459.78

Seihoku spring tournament 2024: 100% -> 86%
2025-03-10 75 -> 73 467.14
2025-03-03 77 -> 75 461.89 -> 467.14

SPB Riichi Open 2023: 57% -> 43%
2025-03-02 75 -> 77 461.89

Tournaments

# Base rank Date Place Power Coefficient Type Tournament City
1 343 2025-04-26 24/36 100% 1.90 RR Seihoku spring tournament 2025 Saint Petersburg
2 424 2025-02-16 35/60 100% 3.25 RR White Wolf Cup Saint Petersburg
3 124 2024-10-13 79/90 100% 3.75 RR Moscow Riichi 2024 Moscow
4 979 2024-09-01 3/96 100% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
5 630 2024-03-30 18/47 71% 2.10 RR Seihoku spring tournament 2024 Saint Petersburg
6 206 2023-09-03 86/108 29% 4.00 RR SPB Riichi Open 2023 Saint Petersburg
7 120 2022-11-06 67/76 0% 4.20 RR IX Russian Riichi Championship Perm
8 135 2022-06-12 97/112 0% 4.05 RR Moscow Riichi 2022 Moscow