Ermolaev Andrei
From Sarov, Russia
EMA: 15990413
Common russian riichi rating (CRR)
Rating date July 10, 2025 (latest changes July 10, 2025).
101 place (423.59).
how we calculated rating score
max_coefficients = (4.10 * 1 + 4.60 * 0.86 + 3.85 * 1 + 3.75 * 1) = 15.64266
p1 = (663.55 * 4.60 * 0.86 + 478.26 * 2.80 * 1 + 492.54 * 4.10 * 1 + 0 + 0) / (4.60 * 0.86 + 2.80 * 1 + 4.10 * 1 + 1 + 1) = 465.2221580264526
p2 = (663.55 * 4.60 * 0.86 + 492.54 * 4.10 * 1 + 478.26 * 2.80 * 1) / max_coefficients = 381.9484665651494
score = 465.2221580264526 * 0.5 + 381.9484665651494 * 0.5 = 423.585312295801
Rating changes
| Date | Place | Points | Reason | 
|---|---|---|---|
| 2025-06-15 | 141 -> 101 | 333.16 -> 423.59 | 
                        
                             13 bloody tiles: 0% -> 100%  | 
                
| 2025-06-14 | 140 -> 141 | 333.16 | |
| 2025-06-11 | 142 -> 140 | 333.16 | |
| 2025-06-09 | 143 -> 142 | 333.16 | |
| 2025-06-08 | 142 -> 143 | 333.16 | |
| 2025-05-17 | 140 -> 142 | 333.16 | |
| 2025-05-12 | 131 -> 140 | 349.66 -> 333.16 | 
                        
                             X Russian Championship: 100% -> 86%  | 
                
| 2025-05-10 | 132 -> 131 | 349.66 | |
| 2025-05-03 | 129 -> 132 | 349.66 | |
| 2025-05-01 | 130 -> 129 | 349.66 | 
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 493 | 
                     | 
                35/68 | 100% | 4.10 | RR | 13 bloody tiles | Perm | |
| 2 | 478 | 
                     | 
                13/24 | 100% | 2.80 | CRR | Riichi never changing | Moscow | |
| 3 | 664 | 
                     | 
                37/108 | 86% | 4.60 | RR | X Russian Championship | Perm | |
| 4 | 870 | 
                     | 
                4/24 | 0% | 2.80 | CRR | Meeting in the billiard room | Moscow | |
| 5 | 667 | 
                     | 
                26/76 | 0% | 4.20 | RR | IX Russian Riichi Championship | Perm | |
| 6 | 164 | 
                     | 
                47/56 | 0% | 3.30 | RR | Kirov Tournament | Kirov | |
| 7 | 128 | 
                     | 
                35/40 | 0% | 2.90 | EMA | Big open chiitoitsu in a small tenpai | Kirov | |
| 8 | 852 | 
                     | 
                5/28 | 0% | 2.60 | RR | And yet the sinner collects tanyao | Kirov | |
| 9 | 590 | 
                     | 
                35/84 | 0% | 4.20 | EMA | Haru Shanten 2019 | Perm | |
| 10 | 383 | 
                     | 
                30/48 | 0% | 3.10 | RR | Agari team tournament 2019 | Moscow |