Grebnev Grigorii

From Saint Petersburg, Russia

Player page

Internal rating (RR)

Rating date March 10, 2025 (latest changes March 10, 2025).

92 place (404.02).

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

p1 = (700.93 * 4 * 0.43 + 239.13 * 2.10 * 1 + 484.21 * 3.85 * 1 + 593.22 * 3.25 * 1 + 0) / (4 * 0.43 + 2.10 * 1 + 3.85 * 1 + 3.25 * 1 + 1) = 461.29305714093874

p2 = (593.22 * 3.25 * 1 + 484.21 * 3.85 * 1 + 700.93 * 4 * 0.43 + 239.13 * 2.10 * 1) / max_coefficients = 346.75268138801266

score = 461.29305714093874 * 0.5 + 346.75268138801266 * 0.5 = 404.02286926447573

Rating changes

Show

all results
Date Place Points Reason
2025-03-03 89 -> 92 422.14 -> 404.02

SPB Riichi Open 2023: 57% -> 43%
2025-03-02 85 -> 89 422.14
2025-02-16 111 -> 85 319.04 -> 422.14

White Wolf Cup: 0% -> 100%
2025-02-11 115 -> 111 319.04
2025-02-02 111 -> 115 319.04
2025-01-26 108 -> 111 319.04
2025-01-07 104 -> 108 319.04
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

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 593 2025-02-16 25/60 100% 3.25 RR White Wolf Cup
2 484 2024-09-01 50/96 100% 3.85 RR SPB Riichi Open 2024
3 239 2024-03-30 36/47 100% 2.10 RR Seihoku spring tournament 2024
4 701 2023-09-03 33/108 43% 4.00 RR SPB Riichi Open 2023