Grebnev Grigorii

From Saint Petersburg, Russia

Player page

Internal rating (RR)

Rating date Aug. 4, 2025 (latest changes Aug. 4, 2025).

108 place (374.26).

max_coefficients = (4.10 * 1 + 3.85 * 1 + 3.75 * 1 + 3.50 * 1) = 15.2

p1 = (700.93 * 4 * 0.14 + 239.13 * 2.10 * 0.57 + 484.21 * 3.85 * 1 + 593.22 * 3.25 * 1 + 0) / (4 * 0.14 + 2.10 * 0.57 + 3.85 * 1 + 3.25 * 1 + 1) = 453.80659957818136

p2 = (593.22 * 3.25 * 1 + 484.21 * 3.85 * 1 + 700.93 * 4 * 0.14 + 239.13 * 2.10 * 0.57) / max_coefficients = 294.72171052631575

score = 453.80659957818136 * 0.5 + 294.72171052631575 * 0.5 = 374.26415505224855

Rating changes

Show

Date Place Points Reason
2025-08-04 111 -> 108 372.82 -> 374.26
2025-08-03 110 -> 111 372.82
2025-07-30 110 371.99 -> 372.82

Seihoku spring tournament 2024: 71% -> 57%

2025-07-14 111 -> 110 371.99
2025-07-13 107 -> 111 371.99
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%

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 57% 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