Grebnev Grigorii

From Saint Petersburg, Russia

Player page

Internal rating (RR)

Rating date June 15, 2025 (latest changes June 15, 2025).

106 place (388.76).

max_coefficients = (4.10 * 1 + 4.60 * 0.86 + 3.85 * 1 + 3.75 * 1) = 15.64266

p1 = (700.93 * 4 * 0.29 + 239.13 * 2.10 * 0.71 + 484.21 * 3.85 * 1 + 593.22 * 3.25 * 1 + 0) / (4 * 0.29 + 2.10 * 0.71 + 3.85 * 1 + 3.25 * 1 + 1) = 460.95023378383536

p2 = (593.22 * 3.25 * 1 + 484.21 * 3.85 * 1 + 700.93 * 4 * 0.29 + 239.13 * 2.10 * 0.71) / max_coefficients = 316.56444620032653

score = 460.95023378383536 * 0.5 + 316.56444620032653 * 0.5 = 388.7573399920809

Rating changes

Show

all results
Date Place Points Reason
2025-06-15 101 -> 106 393.45 -> 388.76
2025-06-11 102 -> 101 393.45
2025-05-30 102 392.79 -> 393.45

Seihoku spring tournament 2024: 86% -> 71%
2025-05-12 105 -> 102 385.94 -> 392.79
2025-05-03 91 -> 105 404.63 -> 385.94

SPB Riichi Open 2023: 43% -> 29%
2025-04-26 90 -> 91 404.63
2025-04-11 92 -> 90 404.63
2025-03-30 92 404.02 -> 404.63

Seihoku spring tournament 2024: 100% -> 86%
2025-03-03 89 -> 92 422.14 -> 404.02

SPB Riichi Open 2023: 57% -> 43%
2025-03-02 85 -> 89 422.14

Tournaments

# Base rank Date Place Power Coefficient Type Tournament City
1 593 2025-02-16 25/60 100% 3.25 RR White Wolf Cup Saint Petersburg
2 484 2024-09-01 50/96 100% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
3 239 2024-03-30 36/47 71% 2.10 RR Seihoku spring tournament 2024 Saint Petersburg
4 701 2023-09-03 33/108 29% 4.00 RR SPB Riichi Open 2023 Saint Petersburg