Lavreniuk Irina

From Moscow, Russia

EMA: 15990327

Player page

Internal rating (RR)

Rating date Oct. 10, 2025 (latest changes Oct. 9, 2025).

145 place (289.51).

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

p1 = (539.33 * 3.75 * 1 + 294.12 * 3.05 * 1 + 67.80 * 3.25 * 1 + 666.67 * 3.05 * 0.43 + 413.04 * 2.10 * 0.43 + 18.69 * 4.60 * 0.57) / (3.75 * 1 + 3.05 * 1 + 3.25 * 1 + 3.05 * 0.43 + 2.10 * 0.43 + 4.60 * 0.57) = 297.7516050606856

p2 = (539.33 * 3.75 * 1 + 294.12 * 3.05 * 1 + 666.67 * 3.05 * 0.43 + 413.04 * 2.10 * 0.43) / max_coefficients = 281.26891891891887

score = 297.7516050606856 * 0.5 + 281.26891891891887 * 0.5 = 289.51026198980225

Rating changes

Show

all results
Date Place Points Reason
2025-09-30 142 -> 145 294.83 -> 289.51

Seihoku spring tournament 2024: 57% -> 43%
2025-09-12 147 -> 142 289.00 -> 294.83

X Russian Championship: 71% -> 57%
2025-09-10 138 -> 147 303.87 -> 289.00

Agari Spring Tournament 2024: 57% -> 43%
2025-09-03 138 305.94 -> 303.87

SPB Riichi Open 2023: 14% -> 0%
2025-09-01 142 -> 138 301.87 -> 305.94
2025-08-31 137 -> 142 301.87
2025-08-04 137 300.40 -> 301.87
2025-08-03 131 -> 137 300.40
2025-07-30 131 305.40 -> 300.40

Seihoku spring tournament 2024: 71% -> 57%
2025-07-13 128 -> 131 305.40

Tournaments

# Base rank Date Place Power Coefficient Type Tournament City
1 68 2025-02-16 56/60 100% 3.25 RR White Wolf Cup Saint Petersburg
2 294 2025-02-02 37/52 100% 3.05 RR Agari Winter Tournament 2025 Moscow
3 539 2024-10-13 42/90 100% 3.75 RR Moscow Riichi 2024 Moscow
4 19 2024-05-12 106/108 57% 4.60 RR X Russian Championship Perm
5 413 2024-03-30 28/47 43% 2.10 RR Seihoku spring tournament 2024 Saint Petersburg
6 667 2024-03-10 18/52 43% 3.05 RR Agari Spring Tournament 2024 Moscow
7 421 2023-09-03 63/108 0% 4.00 RR SPB Riichi Open 2023 Saint Petersburg
8 391 2023-06-11 54/88 0% 3.75 RR Money can not buy tenpai Perm
9 427 2022-11-06 44/76 0% 4.20 RR IX Russian Riichi Championship Perm
10 604 2022-06-12 45/112 0% 4.05 RR Moscow Riichi 2022 Moscow
11 253 2021-11-28 57/76 0% 3.45 RR Saint Petersburg Open 2021 Saint Petersburg