Grebnev Grigorii

From Saint Petersburg, Russia

Player page

Common russian riichi rating (CRR)

Rating date Sept. 1, 2025 (latest changes Sept. 1, 2025).

102 place (446.39).

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

p1 = (700.93 * 4 * 0.14 + 239.13 * 2.10 * 0.57 + 484.21 * 3.85 * 0.86 + 593.22 * 3.25 * 1 + 666.67 * 2 * 1) / (4 * 0.14 + 2.10 * 0.57 + 3.85 * 0.86 + 3.25 * 1 + 2 * 1) = 537.3993290622616

p2 = (593.22 * 3.25 * 1 + 484.21 * 3.85 * 0.86 + 666.67 * 2 * 1 + 700.93 * 4 * 0.14) / max_coefficients = 355.38918918918915

score = 537.3993290622616 * 0.5 + 355.38918918918915 * 0.5 = 446.3942591257254

Rating changes

Show

all results
Date Place Points Reason
2025-09-01 103 -> 102 449.14 -> 446.39

SPB Riichi Open 2024: 100% -> 86%
2025-08-31 98 -> 103 449.14
2025-08-09 99 -> 98 449.14
2025-08-04 99 447.36 -> 449.14
2025-08-03 98 -> 99 447.36
2025-07-30 100 -> 98 443.39 -> 447.36

Seihoku spring tournament 2024: 71% -> 57%
2025-07-26 97 -> 100 443.39
2025-07-13 94 -> 97 443.39
2025-07-12 96 -> 94 440.02 -> 443.39
2025-07-03 91 -> 96 457.06 -> 440.02

SPB Riichi Open 2023: 29% -> 14%

Tournaments

# Base rank Date Place Power Coefficient Type Tournament City
1 667 2025-06-14 7/19 100% 2.00 CRR Tonpu-master Saint Petersburg
2 593 2025-02-16 25/60 100% 3.25 RR White Wolf Cup Saint Petersburg
3 484 2024-09-01 50/96 86% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
4 239 2024-03-30 36/47 57% 2.10 RR Seihoku spring tournament 2024 Saint Petersburg
5 701 2023-09-03 33/108 14% 4.00 RR SPB Riichi Open 2023 Saint Petersburg
6 355 2023-02-25 21/32 0% 1.80 CRR Earth cup Saint Petersburg
7 282 2022-08-27 29/40 0% 1.80 CRR Sun tournament Saint Petersburg