Ermolaev Alexey
From Kirov, Russia
EMA: 15990340
Common russian riichi rating (CRR)
Rating date Nov. 6, 2024 (latest changes Nov. 6, 2024).
25 place (633.09).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (478.26 * 2.80 * 0.14 + 356.32 * 3.75 * 0.57 + 66.67 * 1.20 * 0.71 + 616.82 * 4 * 0.71 + 897.20 * 4.60 * 1 + 747.37 * 3.85 * 1) / (2.80 * 0.14 + 3.75 * 0.57 + 1.20 * 0.71 + 4 * 0.71 + 4.60 * 1 + 3.85 * 1) = 664.9022283597931
p2 = (897.20 * 4.60 * 1 + 747.37 * 3.85 * 1 + 616.82 * 4 * 0.71 + 356.32 * 3.75 * 0.57) / max_coefficients = 601.2851735015773
score = 664.9022283597931 * 0.5 + 601.2851735015773 * 0.5 = 633.0937009306851
Rating changes
| Date | Place | Points | Reason | 
|---|---|---|---|
| 2024-11-05 | 28 -> 25 | 629.99 -> 633.09 | |
| 2024-11-03 | 26 -> 28 | 640.35 -> 629.99 | 
                        
                             SPB Riichi Open 2023: 86% -> 71%  | 
                
| 2024-10-26 | 27 -> 26 | 637.20 -> 640.35 | 
                        
                             Riichi or die: 86% -> 71%  | 
                
| 2024-10-22 | 26 -> 27 | 637.20 | |
| 2024-10-18 | 26 | 635.10 -> 637.20 | 
                        
                             Meeting in the billiard room: 29% -> 14%  | 
                
| 2024-10-13 | 24 -> 26 | 641.56 -> 635.10 | |
| 2024-10-11 | 26 -> 24 | 643.13 -> 641.56 | 
                        
                             Money can not buy tenpai: 71% -> 57%  | 
                
| 2024-09-06 | 27 -> 26 | 640.89 -> 643.13 | 
                        
                             IX Russian Riichi Championship: 29% -> 14%  | 
                
| 2024-09-03 | 27 | 640.07 -> 640.89 | 
                        
                             SPB Riichi Open 2023: 100% -> 86%  | 
                
| 2024-09-01 | 40 -> 27 | 567.39 -> 640.07 | 
                        
                             SPB Riichi Open 2024: 0% -> 100%  | 
                
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 747 | 
                     | 
                25/96 | 100% | 3.85 | RR | SPB Riichi Open 2024 | Saint Petersburg | |
| 2 | 897 | 
                     | 
                12/108 | 100% | 4.60 | RR | X Russian Championship | Perm | |
| 3 | 617 | 
                     | 
                42/108 | 71% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg | |
| 4 | 67 | 
                     | 
                15/16 | 71% | 1.20 | CRR | Riichi or die | Kirov | |
| 5 | 356 | 
                     | 
                57/88 | 57% | 3.75 | RR | Money can not buy tenpai | Perm | |
| 6 | 478 | 
                     | 
                13/24 | 14% | 2.80 | CRR | Meeting in the billiard room | Moscow | |
| 7 | 507 | 
                     | 
                38/76 | 0% | 4.20 | RR | IX Russian Riichi Championship | Perm | |
| 8 | 333 | 
                     | 
                11/16 | 0% | 1.20 | CRR | Vyatka rooster | Kirov | |
| 9 | 909 | 
                     | 
                6/56 | 0% | 3.30 | RR | Kirov Tournament | Kirov | |
| 10 | 205 | 
                     | 
                32/40 | 0% | 2.90 | EMA | Big open chiitoitsu in a small tenpai | Kirov | |
| 11 | 279 | 
                     | 
                81/112 | 0% | 4.05 | EMA | VIII Russian Riichi Championship | Moscow | |
| 12 | 556 | 
                     | 
                29/64 | 0% | 3.85 | EMA | Aki Shanten 2019 | Perm | |
| 13 | 889 | 
                     | 
                4/28 | 0% | 2.60 | RR | And yet the sinner collects tanyao | Kirov | |
| 14 | 114 | 
                     | 
                32/36 | 0% | 3.20 | RR | Moscow Open Riichi Marathon 2019 | Moscow | |
| 15 | 843 | 
                     | 
                14/84 | 0% | 4.20 | EMA | Haru Shanten 2019 | Perm | |
| 16 | 130 | 
                     | 
                21/24 | 0% | 2.50 | RR | Toi-Toi-man Tournament | Kirov | |
| 17 | 648 | 
                     | 
                33/92 | 0% | 3.80 | EMA | VII Russian Riichi Championship "Aki Shanten" | Perm | |
| 18 | 304 | 
                     | 
                17/24 | 0% | 1.40 | RR | Seven ryanmens | Kirov | |
| 19 | 155 | 
                     | 
                61/72 | 0% | 3.85 | EMA | Haru Shanten 2018 | Perm | |
| 20 | 733 | 
                     | 
                5/16 | 0% | 1.20 | RR | Yakuman in discard | Kirov | |
| 21 | 28 | 
                     | 
                70/72 | 0% | 3.25 | EMA | Perm Riichi 2017 Aki Shanten | Perm | |
| 22 | 667 | 
                     | 
                6/16 | 0% | 1.20 | RR | Crouching Peacock, Hidden Dragon 2017 | Kirov | |
| 23 | 933 | 
                     | 
                🥈 | 2/16 | 0% | 1.00 | RR | Third riichi mahjong tournament, Kirov 2017 | Kirov | 
| 24 | 545 | 
                     | 
                6/12 | 0% | 0.90 | CRR | Second riichi mahjong tournament, Kirov 2017 | Kirov |