Petsilyak Igor

From Moscow, Russia

EMA: 15990408

Player page

Internal rating (RR)

Rating date Aug. 15, 2025 (latest changes Aug. 9, 2025).

92 place (440.01).

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

p1 = (102.80 * 4 * 0.14 + 738.32 * 4.60 * 0.71 + 0 * 3.05 * 0.71 + 177.22 * 3.65 * 0.86 + 42.11 * 3.85 * 1 + 910.11 * 3.75 * 1 + 258.06 * 3.10 * 1 + 254.90 * 3.05 * 1 + 466.67 * 2.45 * 1) / (4 * 0.14 + 4.60 * 0.71 + 3.05 * 0.71 + 3.65 * 0.86 + 3.85 * 1 + 3.75 * 1 + 3.10 * 1 + 3.05 * 1 + 2.45 * 1) = 368.03221521809496

p2 = (910.11 * 3.75 * 1 + 738.32 * 4.60 * 0.71 + 466.67 * 2.45 * 1 + 258.06 * 3.10 * 1) / max_coefficients = 511.9868421052632

score = 368.03221521809496 * 0.5 + 511.9868421052632 * 0.5 = 440.00952866167904

Rating changes

Show

all results
Date Place Points Reason
2025-08-09 93 -> 92 436.90 -> 440.01

Agari Summer Tournament 2024: 86% -> 71%
2025-08-04 94 -> 93 432.57 -> 436.90

Riichi over Volga: 100% -> 86%
2025-08-03 93 -> 94 432.57
2025-07-13 94 -> 93 415.09 -> 432.57

Agari Summer Tournament 2025: 0% -> 100%
2025-07-12 92 -> 94 431.31 -> 415.09

X Russian Championship: 86% -> 71%
2025-07-10 93 -> 92 431.31
2025-07-03 94 -> 93 428.41 -> 431.31

SPB Riichi Open 2023: 29% -> 14%
2025-06-15 87 -> 94 435.89 -> 428.41
2025-06-11 89 -> 87 435.89
2025-06-09 89 432.89 -> 435.89

Agari Summer Tournament 2024: 100% -> 86%

Tournaments

# Base rank Date Place Power Coefficient Type Tournament City
1 467 2025-07-13 17/31 100% 2.45 RR Agari Summer Tournament 2025 Moscow
2 255 2025-02-02 39/52 100% 3.05 RR Agari Winter Tournament 2025 Moscow
3 258 2025-01-07 24/32 100% 3.10 RR Moscow Open Riichi Marathon Moscow
4 910 2024-10-13 9/90 100% 3.75 RR Moscow Riichi 2024 Moscow
5 42 2024-09-01 92/96 100% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
6 177 2024-08-04 66/80 86% 3.65 RR Riichi over Volga Samara
7 0 2024-06-09 52/52 71% 3.05 RR Agari Summer Tournament 2024 Moscow
8 738 2024-05-12 29/108 71% 4.60 RR X Russian Championship Perm
9 103 2023-09-03 97/108 14% 4.00 RR SPB Riichi Open 2023 Saint Petersburg
10 493 2022-11-06 39/76 0% 4.20 RR IX Russian Riichi Championship Perm
11 189 2022-06-12 91/112 0% 4.05 RR Moscow Riichi 2022 Moscow
12 733 2021-11-28 21/76 0% 3.45 RR Saint Petersburg Open 2021 Saint Petersburg