Kopylov Dmitry

From Saint Petersburg, Russia

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Internal rating (RR)

Rating date July 30, 2025 (latest changes July 30, 2025).

85 place (459.15).

max_coefficients = (4.10 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.35

p1 = (205.61 * 4 * 0.14 + 630.43 * 2.10 * 0.57 + 978.95 * 3.85 * 1 + 123.60 * 3.75 * 1 + 423.73 * 3.25 * 1 + 342.86 * 1.90 * 1) / (4 * 0.14 + 2.10 * 0.57 + 3.85 * 1 + 3.75 * 1 + 3.25 * 1 + 1.90 * 1) = 491.3383842209573

p2 = (978.95 * 3.85 * 1 + 423.73 * 3.25 * 1 + 630.43 * 2.10 * 0.57 + 342.86 * 1.90 * 1) / max_coefficients = 426.9693811074918

score = 491.3383842209573 * 0.5 + 426.9693811074918 * 0.5 = 459.15388266422457

Rating changes

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all results
Date Place Points Reason
2025-07-30 81 -> 85 466.72 -> 459.15

Seihoku spring tournament 2024: 71% -> 57%
2025-07-13 79 -> 81 466.72
2025-07-12 81 -> 79 462.62 -> 466.72
2025-07-10 82 -> 81 462.62
2025-07-03 83 -> 82 457.26 -> 462.62

SPB Riichi Open 2023: 29% -> 14%
2025-06-15 76 -> 83 463.65 -> 457.26
2025-06-11 79 -> 76 463.65
2025-06-09 82 -> 79 463.65
2025-06-08 81 -> 82 463.65
2025-05-30 75 -> 81 471.27 -> 463.65

Seihoku spring tournament 2024: 86% -> 71%

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 57% 2.10 RR Seihoku spring tournament 2024 Saint Petersburg
6 206 2023-09-03 86/108 14% 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