Grebnev Grigorii

From Saint Petersburg, Russia

Player page

Internal rating (RR)

Rating date Oct. 10, 2025 (latest changes Oct. 9, 2025).

125 place (324.32).

max_coefficients = (4.10 * 1 + 3.75 * 1 + 3.50 * 1 + 3.45 * 1) = 14.8

p1 = (484.21 * 3.85 * 0.86 + 593.22 * 3.25 * 1 + 239.13 * 2.10 * 0.43 + 0 + 0) / (3.85 * 0.86 + 3.25 * 1 + 2.10 * 0.43 + 1 + 1) = 395.878472723771

p2 = (593.22 * 3.25 * 1 + 484.21 * 3.85 * 0.86 + 239.13 * 2.10 * 0.43) / max_coefficients = 252.77094594594593

score = 395.878472723771 * 0.5 + 252.77094594594593 * 0.5 = 324.3247093348584

Rating changes

Show

all results
Date Place Points Reason
2025-10-09 126 -> 125 324.32
2025-10-04 127 -> 126 324.32
2025-09-30 127 324.34 -> 324.32

Seihoku spring tournament 2024: 57% -> 43%
2025-09-14 128 -> 127 324.34
2025-09-12 130 -> 128 324.34
2025-09-03 118 -> 130 368.35 -> 324.34

SPB Riichi Open 2023: 14% -> 0%
2025-09-01 114 -> 118 374.26 -> 368.35

SPB Riichi Open 2024: 100% -> 86%
2025-08-31 108 -> 114 374.26
2025-08-04 111 -> 108 372.82 -> 374.26
2025-08-03 110 -> 111 372.82

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 86% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
3 239 2024-03-30 36/47 43% 2.10 RR Seihoku spring tournament 2024 Saint Petersburg
4 701 2023-09-03 33/108 0% 4.00 RR SPB Riichi Open 2023 Saint Petersburg