Kopylov Dmitry

From Saint Petersburg, Russia

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Common russian riichi rating (CRR)

Rating date Dec. 19, 2023 (latest changes Dec. 19, 2023).

141 place (176.50).

max_coefficients = (4 * 1 + 3.75 * 1 + 4.20 * 0.86 + 2.90 * 1) = 14.249820000000001

p1 = (135.14 * 4.05 * 0.43 + 384.62 * 1.80 * 0.71 + 120 * 4.20 * 0.86 + 205.61 * 4 * 1 + 0 * 1.80 * 1 + 434.78 * 1.40 * 1) / (4.05 * 0.43 + 1.80 * 0.71 + 4.20 * 0.86 + 4 * 1 + 1.80 * 1 + 1.40 * 1) = 187.54987740017464

p2 = (205.61 * 4 * 1 + 434.78 * 1.40 * 1 + 384.62 * 1.80 * 0.71 + 120 * 4.20 * 0.86) / max_coefficients = 165.4498091905722

score = 187.54987740017464 * 0.5 + 165.4498091905722 * 0.5 = 176.4998432953734

Rating changes

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all results
Date Place Points Reason
2023-12-19 148 -> 141 176.50
2023-12-12 151 -> 148 175.45 -> 176.50

Moscow Riichi 2022: 57% -> 43%
2023-11-28 156 -> 151 175.45
2023-11-26 151 -> 156 176.03 -> 175.45
2023-11-20 153 -> 151 176.03
2023-11-09 154 -> 153 176.03
2023-11-06 155 -> 154 173.77 -> 176.03

IX Russian Riichi Championship: 100% -> 86%
2023-11-05 149 -> 155 173.77
2023-10-27 149 178.83 -> 173.77

Sun tournament: 86% -> 71%
2023-10-22 147 -> 149 178.83

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 206 2023-09-03 86/108 100% 4.00 RR SPB Riichi Open 2023
2 435 2023-04-22 14/24 100% 1.40 CRR Fire cup 2023
3 0 2023-02-25 32/32 100% 1.80 CRR Earth cup
4 120 2022-11-06 67/76 86% 4.20 RR IX Russian Riichi Championship
5 385 2022-08-27 25/40 71% 1.80 CRR Sun tournament
6 135 2022-06-12 97/112 43% 4.05 RR Moscow Riichi 2022