Lavreniuk Irina
From Moscow, Russia
EMA: 15990327
Common russian riichi rating (CRR)
Rating date Jan. 31, 2026 (latest changes Jan. 30, 2026).
207 place (235.23).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95
p1 = (666.67 * 3.05 * 0.14 + 413.04 * 2.10 * 0.14 + 18.69 * 4.60 * 0.29 + 473.68 * 1.50 * 0.29 + 539.33 * 3.75 * 0.71 + 294.12 * 3.05 * 1 + 67.80 * 3.25 * 1) / (3.05 * 0.14 + 2.10 * 0.14 + 4.60 * 0.29 + 1.50 * 0.29 + 3.75 * 0.71 + 3.05 * 1 + 3.25 * 1) = 279.6567786735654
p2 = (539.33 * 3.75 * 0.71 + 294.12 * 3.05 * 1 + 666.67 * 3.05 * 0.14 + 67.80 * 3.25 * 1) / max_coefficients = 190.81003344481607
score = 279.6567786735654 * 0.5 + 190.81003344481607 * 0.5 = 235.2334060591907
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-01-30 | 207 | 237.85 -> 235.23 |
Seihoku spring tournament 2024: 29% -> 14% |
| 2026-01-26 | 208 -> 207 | 237.85 | |
| 2026-01-25 | 203 -> 208 | 241.46 -> 237.85 |
Duplicate riichi mahjong tournament 2024: 43% -> 29% |
| 2026-01-12 | 207 -> 203 | 234.49 -> 241.46 |
X Russian Championship: 43% -> 29% |
| 2026-01-10 | 202 -> 207 | 250.77 -> 234.49 |
Agari Spring Tournament 2024: 29% -> 14% |
| 2026-01-07 | 201 -> 202 | 250.77 | |
| 2026-01-05 | 203 -> 201 | 250.77 | |
| 2026-01-03 | 202 -> 203 | 250.77 | |
| 2026-01-01 | 203 -> 202 | 250.77 | |
| 2025-12-27 | 200 -> 203 | 250.77 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 68 |
|
56/60 | 100% | 3.25 | RR | White Wolf Cup | Saint Petersburg | |
| 2 | 294 |
|
37/52 | 100% | 3.05 | RR | Agari Winter Tournament 2025 | Moscow | |
| 3 | 539 |
|
42/90 | 71% | 3.75 | RR | Moscow Riichi 2024 | Moscow | |
| 4 | 474 |
|
11/20 | 29% | 1.50 | CRR | Duplicate riichi mahjong tournament 2024 | Moscow | |
| 5 | 19 |
|
106/108 | 29% | 4.60 | RR | X Russian Championship | Perm | |
| 6 | 413 |
|
28/47 | 14% | 2.10 | RR | Seihoku spring tournament 2024 | Saint Petersburg | |
| 7 | 667 |
|
18/52 | 14% | 3.05 | RR | Agari Spring Tournament 2024 | Moscow | |
| 8 | 462 |
|
22/40 | 0% | 2.90 | CRR | Autumn Agari tournament | Moscow | |
| 9 | 318 |
|
16/23 | 0% | 2.10 | CRR | Mushroom League | Moscow | |
| 10 | 421 |
|
63/108 | 0% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg | |
| 11 | 391 |
|
54/88 | 0% | 3.75 | RR | Money can not buy tenpai | Perm | |
| 12 | 0 |
|
24/24 | 0% | 2.80 | CRR | Meeting in the billiard room | Moscow | |
| 13 | 427 |
|
44/76 | 0% | 4.20 | RR | IX Russian Riichi Championship | Perm | |
| 14 | 604 |
|
45/112 | 0% | 4.05 | RR | Moscow Riichi 2022 | Moscow | |
| 15 | 253 |
|
57/76 | 0% | 3.45 | RR | Saint Petersburg Open 2021 | Saint Petersburg |