Ermolaev Alexey
From Kirov, Russia
EMA: 15990340
Common russian riichi rating (CRR)
Rating date Oct. 11, 2024 (latest changes Oct. 11, 2024).
24 place (641.56).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.65 * 1 + 4 * 0.86) = 15.5284
p1 = (506.67 * 4.20 * 0.14 + 478.26 * 2.80 * 0.29 + 356.32 * 3.75 * 0.57 + 66.67 * 1.20 * 0.86 + 616.82 * 4 * 0.86 + 897.20 * 4.60 * 1 + 747.37 * 3.85 * 1) / (4.20 * 0.14 + 2.80 * 0.29 + 3.75 * 0.57 + 1.20 * 0.86 + 4 * 0.86 + 4.60 * 1 + 3.85 * 1) = 646.6907520512395
p2 = (897.20 * 4.60 * 1 + 747.37 * 3.85 * 1 + 616.82 * 4 * 0.86 + 356.32 * 3.75 * 0.57) / max_coefficients = 636.4268050797249
score = 646.6907520512395 * 0.5 + 636.4268050797249 * 0.5 = 641.5587785654823
Rating changes
| Date | Place | Points | Reason | 
|---|---|---|---|
| 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%  | 
                
| 2024-08-26 | 40 | 564.22 -> 567.39 | 
                        
                             Riichi or die: 100% -> 86%  | 
                
| 2024-08-18 | 41 -> 40 | 562.65 -> 564.22 | 
                        
                             Meeting in the billiard room: 43% -> 29%  | 
                
| 2024-08-11 | 43 -> 41 | 561.89 -> 562.65 | 
                        
                             Money can not buy tenpai: 86% -> 71%  | 
                
| 2024-08-04 | 37 -> 43 | 572.79 -> 561.89 | |
| 2024-07-14 | 33 -> 37 | 572.79 | |
| 2024-07-06 | 32 -> 33 | 581.57 -> 572.79 | 
                        
                             IX Russian Riichi Championship: 43% -> 29%  | 
                
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 | 86% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg | |
| 4 | 67 | 
                     | 
                15/16 | 86% | 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 | 29% | 2.80 | CRR | Meeting in the billiard room | Moscow | |
| 7 | 507 | 
                     | 
                38/76 | 14% | 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 |