Petsilyak Igor

From Moscow, Russia

EMA: 15990408

Player page

Internal rating (RR)

Rating date Jan. 28, 2026 (latest changes Jan. 26, 2026).

85 place (448.14).

max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95

p1 = (738.32 * 4.60 * 0.29 + 0 * 3.05 * 0.43 + 177.22 * 3.65 * 0.57 + 910.11 * 3.75 * 0.71 + 258.06 * 3.10 * 0.86 + 254.90 * 3.05 * 1 + 466.67 * 2.45 * 1 + 181.82 * 3.45 * 1 + 578.95 * 3.90 * 1 + 466.67 * 3 * 1) / (4.60 * 0.29 + 3.05 * 0.43 + 3.65 * 0.57 + 3.75 * 0.71 + 3.10 * 0.86 + 3.05 * 1 + 2.45 * 1 + 3.45 * 1 + 3.90 * 1 + 3 * 1) = 412.06139414997165

p2 = (910.11 * 3.75 * 0.71 + 578.95 * 3.90 * 1 + 466.67 * 3 * 1 + 466.67 * 2.45 * 1) / max_coefficients = 484.21872909699

score = 412.06139414997165 * 0.5 + 484.21872909699 * 0.5 = 448.14006162348085

Rating changes

Show

all results
Date Place Points Reason
2026-01-25 78 -> 85 448.14
2026-01-14 79 -> 78 448.14
2026-01-12 75 -> 79 462.62 -> 448.14

X Russian Championship: 43% -> 29%
2026-01-07 79 -> 75 449.63 -> 462.62

Moscow Open Riichi Marathon: 100% -> 86%

Moscow Open Riichi Marathon 2026: 0% -> 100%
2025-12-13 75 -> 79 471.38 -> 449.63

Moscow Riichi 2024: 86% -> 71%
2025-12-09 76 -> 75 467.70 -> 471.38

Agari Summer Tournament 2024: 57% -> 43%
2025-12-04 77 -> 76 465.26 -> 467.70

Riichi over Volga: 71% -> 57%
2025-11-30 75 -> 77 465.26
2025-11-14 74 -> 75 465.26
2025-11-12 71 -> 74 485.61 -> 465.26

X Russian Championship: 57% -> 43%

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 467 2026-01-07 17/31 100% 3.00 RR Moscow Open Riichi Marathon 2026 Moscow
2 579 2025-11-04 25/58 100% 3.90 RR XI Russian Championship Moscow
3 182 2025-08-31 64/78 100% 3.45 RR SPB Riichi Open 2025 Saint Petersburg
4 467 2025-07-13 17/31 100% 2.45 RR Agari Summer Tournament 2025 Moscow
5 255 2025-02-02 39/52 100% 3.05 RR Agari Winter Tournament 2025 Moscow
6 258 2025-01-07 24/32 86% 3.10 RR Moscow Open Riichi Marathon Moscow
7 910 2024-10-13 9/90 71% 3.75 RR Moscow Riichi 2024 Moscow
8 42 2024-09-01 92/96 57% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
9 177 2024-08-04 66/80 57% 3.65 RR Riichi over Volga Samara
10 0 2024-06-09 52/52 43% 3.05 RR Agari Summer Tournament 2024 Moscow
11 738 2024-05-12 29/108 29% 4.60 RR X Russian Championship Perm
12 103 2023-09-03 97/108 0% 4.00 RR SPB Riichi Open 2023 Saint Petersburg
13 493 2022-11-06 39/76 0% 4.20 RR IX Russian Riichi Championship Perm
14 189 2022-06-12 91/112 0% 4.05 RR Moscow Riichi 2022 Moscow
15 733 2021-11-28 21/76 0% 3.45 RR Saint Petersburg Open 2021 Saint Petersburg