Kosolapov Stanislav

From Saint Petersburg, Russia

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Internal rating (RR)

Rating date Oct. 13, 2025 (latest changes Oct. 13, 2025).

174 place (198.91).

max_coefficients = (4.10 * 1 + 3.50 * 1 + 3.45 * 1 + 3.85 * 0.86) = 14.349835

p1 = (657.14 * 1.90 * 1 + 246.75 * 3.45 * 1 + 0 + 0 + 0) / (1.90 * 1 + 3.45 * 1 + 1 + 1 + 1) = 251.4814371257485

p2 = (657.14 * 1.90 * 1 + 246.75 * 3.45 * 1) / max_coefficients = 146.33408676824504

score = 251.4814371257485 * 0.5 + 146.33408676824504 * 0.5 = 198.90776194699677

Rating changes

Show

all results
Date Place Points Reason
2025-10-13 174 196.68 -> 198.91
2025-10-04 176 -> 174 196.68
2025-09-30 178 -> 176 196.68
2025-09-12 180 -> 178 196.68
2025-09-03 184 -> 180 196.68
2025-09-01 184 194.82 -> 196.68
2025-08-31 184 194.82

SPB Riichi Open 2025: 0% -> 100%

Tournaments

# Base rank Date Place Power Coefficient Type Tournament City
1 247 2025-08-31 59/78 100% 3.45 RR SPB Riichi Open 2025 Saint Petersburg
2 657 2025-04-26 13/36 100% 1.90 RR Seihoku spring tournament 2025 Saint Petersburg