Grebnev Grigorii

From Saint Petersburg, Russia

Player page

Internal rating (RR)

Rating date Jan. 3, 2025 (latest changes Jan. 3, 2025).

104 place (319.04).

max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85

p1 = (700.93 * 4 * 0.57 + 239.13 * 2.10 * 1 + 484.21 * 3.85 * 1 + 0 + 0) / (4 * 0.57 + 2.10 * 1 + 3.85 * 1 + 1 + 1) = 387.7095627027238

p2 = (484.21 * 3.85 * 1 + 700.93 * 4 * 0.57 + 239.13 * 2.10 * 1) / max_coefficients = 250.37476340694008

score = 387.7095627027238 * 0.5 + 250.37476340694008 * 0.5 = 319.0421630548319

Rating changes

Show

all results
Date Place Points Reason
2025-01-03 98 -> 104 339.96 -> 319.04

SPB Riichi Open 2023: 71% -> 57%
2024-12-11 101 -> 98 339.96
2024-11-06 106 -> 101 339.96
2024-11-03 101 -> 106 360.04 -> 339.96

SPB Riichi Open 2023: 86% -> 71%
2024-10-13 89 -> 101 363.16 -> 360.04
2024-10-11 92 -> 89 363.16
2024-09-06 93 -> 92 363.16
2024-09-03 86 -> 93 376.89 -> 363.16

SPB Riichi Open 2023: 100% -> 86%
2024-09-01 102 -> 86 289.68 -> 376.89

SPB Riichi Open 2024: 0% -> 100%
2024-08-11 103 -> 102 288.53 -> 289.68

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 484 2024-09-01 50/96 100% 3.85 RR SPB Riichi Open 2024
2 239 2024-03-30 36/47 100% 2.10 RR Seihoku spring tournament 2024
3 701 2023-09-03 33/108 57% 4.00 RR SPB Riichi Open 2023