Korobeynikov Vladimir
Russian Champion 2019
From Moscow, Russia
EMA: 15990148
Common russian riichi rating (CRR)
Rating date Oct. 31, 2025 (latest changes Oct. 27, 2025).
47 place (593.67).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.50 * 1 + 3.45 * 1 + 3.85 * 0.86) = 14.349835
p1 = (764.71 * 3.05 * 0.43 + 971.96 * 4.60 * 0.57 + 843.14 * 3.05 * 0.57 + 775.28 * 3.75 * 0.86 + 86.96 * 2.80 * 1) / (3.05 * 0.43 + 4.60 * 0.57 + 3.05 * 0.57 + 3.75 * 0.86 + 2.80 * 1) = 663.5943439271022
p2 = (971.96 * 4.60 * 0.57 + 775.28 * 3.75 * 0.86 + 843.14 * 3.05 * 0.57 + 764.71 * 3.05 * 0.43) / max_coefficients = 523.7440012376449
score = 663.5943439271022 * 0.5 + 523.7440012376449 * 0.5 = 593.6691725823734
Rating changes
| Date | Place | Points | Reason | 
|---|---|---|---|
| 2025-10-13 | 43 -> 47 | 602.19 -> 593.67 | Moscow Riichi 2024: 100% -> 86% | 
| 2025-10-09 | 40 -> 43 | 617.61 -> 602.19 | Agari Summer Tournament 2024: 71% -> 57% | 
| 2025-10-04 | 42 -> 40 | 617.61 | |
| 2025-09-30 | 43 -> 42 | 617.61 | |
| 2025-09-12 | 37 -> 43 | 646.53 -> 617.61 | X Russian Championship: 71% -> 57% | 
| 2025-09-10 | 34 -> 37 | 658.98 -> 646.53 | Agari Spring Tournament 2024: 57% -> 43% | 
| 2025-09-03 | 35 -> 34 | 658.98 | |
| 2025-09-01 | 35 | 650.74 -> 658.98 | |
| 2025-08-31 | 33 -> 35 | 650.74 | |
| 2025-08-09 | 31 -> 33 | 665.14 -> 650.74 | Agari Summer Tournament 2024: 86% -> 71% | 
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 87 |  | 22/24 | 100% | 2.80 | CRR | Riichi never changing | Moscow | |
| 2 | 775 |  | 21/90 | 86% | 3.75 | RR | Moscow Riichi 2024 | Moscow | |
| 3 | 843 |  | 9/52 | 57% | 3.05 | RR | Agari Summer Tournament 2024 | Moscow | |
| 4 | 972 |  | 4/108 | 57% | 4.60 | RR | X Russian Championship | Perm | |
| 5 | 765 |  | 13/52 | 43% | 3.05 | RR | Agari Spring Tournament 2024 | Moscow | |
| 6 | 435 |  | 14/24 | 0% | 2.80 | CRR | Meeting in the billiard room | Moscow | |
| 7 | 627 |  | 29/76 | 0% | 4.20 | RR | IX Russian Riichi Championship | Perm | |
| 8 | 946 |  | 7/112 | 0% | 4.05 | RR | Moscow Riichi 2022 | Moscow | |
| 9 | 935 |  | 🥉 | 3/32 | 0% | 2.70 | RR | The last chance: back to 2019 | Moscow | 
| 10 | 1000 |  | 🥇 | 1/112 | 0% | 4.05 | EMA | VIII Russian Riichi Championship | Moscow | 
| 11 | 825 |  | 12/64 | 0% | 3.45 | EMA | Saint Petersburg Open 2019 | Saint Petersburg | |
| 12 | 574 |  | 21/48 | 0% | 3.10 | RR | Moscow Riichi Open 2018 | Moscow | |
| 13 | 963 |  | 🥈 | 2/28 | 0% | 3.50 | CRR | A-League | Moscow | 
| 14 | 831 |  | 15/84 | 0% | 3.40 | EMA | VI Russian Riichi Championship 2017 | Saint Petersburg | |
| 15 | 889 |  | 8/64 | 0% | 3.45 | EMA | Moscow Riichi Open 2017 | Moscow | |
| 16 | 436 |  | 23/40 | 0% | 2.00 | RR | Moscow championship 2017 (JPML-A rules) | Moscow | |
| 17 | 419 |  | 26/44 | 0% | 2.50 | EMA | Moscow Riichi Championship 2015 | Moscow | |
| 18 | 960 |  | 4/76 | 0% | 2.50 | RR | Moscow Riichi 2014 | Moscow | |
| 19 | 746 |  | 19/72 | 0% | 3.25 | EMA | Russian Riichi Championship 2013 | Moscow | |
| 20 | 509 |  | 28/56 | 0% | 3.00 | RR | "Japanese House" riichi mahjong cup 2013 | Moscow |