Lavreniuk Irina
From Moscow, Russia
EMA: 15990327
Common russian riichi rating (CRR)
Rating date Sept. 4, 2025 (latest changes Sept. 3, 2025).
156 place (313.16).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.75 * 1 + 3.50 * 1 + 3.45 * 1) = 14.8
p1 = (318.18 * 2.10 * 0.14 + 461.54 * 2.90 * 0.29 + 666.67 * 3.05 * 0.57 + 413.04 * 2.10 * 0.57 + 18.69 * 4.60 * 0.71 + 473.68 * 1.50 * 0.71 + 539.33 * 3.75 * 1 + 294.12 * 3.05 * 1 + 67.80 * 3.25 * 1) / (2.10 * 0.14 + 2.90 * 0.29 + 3.05 * 0.57 + 2.10 * 0.57 + 4.60 * 0.71 + 1.50 * 0.71 + 3.75 * 1 + 3.05 * 1 + 3.25 * 1) = 316.26815076499474
p2 = (539.33 * 3.75 * 1 + 666.67 * 3.05 * 0.57 + 294.12 * 3.05 * 1 + 473.68 * 1.50 * 0.71) / max_coefficients = 310.06148648648644
score = 316.26815076499474 * 0.5 + 310.06148648648644 * 0.5 = 313.1648186257406
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-09-03 | 141 -> 156 | 346.07 -> 313.16 |
SPB Riichi Open 2023: 14% -> 0% |
| 2025-09-01 | 142 -> 141 | 341.99 -> 346.07 | |
| 2025-08-31 | 139 -> 142 | 341.99 | |
| 2025-08-26 | 140 -> 139 | 341.99 | |
| 2025-08-22 | 141 -> 140 | 341.39 -> 341.99 |
Mushroom League: 29% -> 14% |
| 2025-08-04 | 143 -> 141 | 339.92 -> 341.39 | |
| 2025-08-03 | 141 -> 143 | 339.92 | |
| 2025-07-30 | 139 -> 141 | 343.86 -> 339.92 |
Seihoku spring tournament 2024: 71% -> 57% |
| 2025-07-26 | 139 | 344.85 -> 343.86 |
Autumn Agari tournament: 43% -> 29% |
| 2025-07-25 | 139 | 345.42 -> 344.85 |
Duplicate riichi mahjong tournament 2024: 86% -> 71% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | 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 | 100% | 3.75 | RR | Moscow Riichi 2024 | Moscow | |
| 4 | 474 |
|
11/20 | 71% | 1.50 | CRR | Duplicate riichi mahjong tournament 2024 | Moscow | |
| 5 | 19 |
|
106/108 | 71% | 4.60 | RR | X Russian Championship | Perm | |
| 6 | 413 |
|
28/47 | 57% | 2.10 | RR | Seihoku spring tournament 2024 | Saint Petersburg | |
| 7 | 667 |
|
18/52 | 57% | 3.05 | RR | Agari Spring Tournament 2024 | Moscow | |
| 8 | 462 |
|
22/40 | 29% | 2.90 | CRR | Autumn Agari tournament | Moscow | |
| 9 | 318 |
|
16/23 | 14% | 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 |