Grebnev Grigorii

From Saint Petersburg, Russia

Player page

Internal rating (RR)

Rating date July 12, 2025 (latest changes July 12, 2025).

107 place (371.99).

max_coefficients = (4.10 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.35

p1 = (593.22 * 3.25 * 1 + 700.93 * 4 * 0.14 + 239.13 * 2.10 * 0.71 + 484.21 * 3.85 * 1 + 0) / (3.25 * 1 + 4 * 0.14 + 2.10 * 0.71 + 3.85 * 1 + 1) = 447.473020548329

p2 = (593.22 * 3.25 * 1 + 484.21 * 3.85 * 1 + 700.93 * 4 * 0.14 + 239.13 * 2.10 * 0.71) / max_coefficients = 296.51661237785015

score = 447.473020548329 * 0.5 + 296.51661237785015 * 0.5 = 371.9948164630896

Rating changes

Show

all results
Date Place Points Reason
2025-07-12 110 -> 107 369.22 -> 371.99
2025-07-03 106 -> 110 388.76 -> 369.22

SPB Riichi Open 2023: 29% -> 14%
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%

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 14% 4.00 RR SPB Riichi Open 2023 Saint Petersburg