Ermolaev Alexey
From Kirov, Russia
EMA: 15990340
Common russian riichi rating (CRR)
Rating date Oct. 12, 2023 (latest changes Oct. 12, 2023).
40 place (479.84).
how we calculated rating score
max_coefficients = (4.20 * 1 + 4 * 1 + 3.75 * 1 + 2.80 * 1) = 14.75
p1 = (478.26 * 2.80 * 1 + 333.33 * 1.20 * 0.71 + 356.32 * 3.75 * 1 + 66.67 * 1.20 * 1 + 506.67 * 4.20 * 1 + 909.09 * 3.30 * 0.14 + 616.82 * 4 * 1) / (2.80 * 1 + 1.20 * 0.71 + 3.75 * 1 + 1.20 * 1 + 4.20 * 1 + 3.30 * 0.14 + 4 * 1) = 466.7617353821722
p2 = (616.82 * 4 * 1 + 506.67 * 4.20 * 1 + 478.26 * 2.80 * 1 + 356.32 * 3.75 * 1) / max_coefficients = 492.9240677966102
score = 466.7617353821722 * 0.5 + 492.9240677966102 * 0.5 = 479.8429015893912
Rating changes
| Date | Place | Points | Reason | 
|---|---|---|---|
| 2023-10-12 | 44 -> 40 | 478.30 -> 479.84 | |
| 2023-09-28 | 45 -> 44 | 478.30 | |
| 2023-09-06 | 42 -> 45 | 484.17 -> 478.30 | 
                        
                             Kirov Tournament: 29% -> 14%  | 
                
| 2023-09-03 | 48 -> 42 | 425.94 -> 484.17 | 
                        
                             Vyatka rooster: 86% -> 71% SPB Riichi Open 2023: 0% -> 100%  | 
                
| 2023-09-01 | 52 -> 48 | 416.34 -> 425.94 | |
| 2021-02-01 | 56 -> 52 | 553.91 -> 416.34 | |
| 2020-02-01 | 56 | 553.91 | 
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 617 | 
                     | 
                42/108 | 100% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg | |
| 2 | 67 | 
                     | 
                15/16 | 100% | 1.20 | CRR | Riichi or die | Kirov | |
| 3 | 356 | 
                     | 
                57/88 | 100% | 3.75 | RR | Money can not buy tenpai | Perm | |
| 4 | 478 | 
                     | 
                13/24 | 100% | 2.80 | CRR | Meeting in the billiard room | Moscow | |
| 5 | 507 | 
                     | 
                38/76 | 100% | 4.20 | RR | IX Russian Riichi Championship | Perm | |
| 6 | 333 | 
                     | 
                11/16 | 71% | 1.20 | CRR | Vyatka rooster | Kirov | |
| 7 | 909 | 
                     | 
                6/56 | 14% | 3.30 | RR | Kirov Tournament | Kirov | |
| 8 | 205 | 
                     | 
                32/40 | 0% | 2.90 | EMA | Big open chiitoitsu in a small tenpai | Kirov | |
| 9 | 279 | 
                     | 
                81/112 | 0% | 4.05 | EMA | VIII Russian Riichi Championship | Moscow | |
| 10 | 556 | 
                     | 
                29/64 | 0% | 3.85 | EMA | Aki Shanten 2019 | Perm | |
| 11 | 889 | 
                     | 
                4/28 | 0% | 2.60 | RR | And yet the sinner collects tanyao | Kirov | |
| 12 | 114 | 
                     | 
                32/36 | 0% | 3.20 | RR | Moscow Open Riichi Marathon 2019 | Moscow | |
| 13 | 843 | 
                     | 
                14/84 | 0% | 4.20 | EMA | Haru Shanten 2019 | Perm | |
| 14 | 130 | 
                     | 
                21/24 | 0% | 2.50 | RR | Toi-Toi-man Tournament | Kirov | |
| 15 | 648 | 
                     | 
                33/92 | 0% | 3.80 | EMA | VII Russian Riichi Championship "Aki Shanten" | Perm | |
| 16 | 304 | 
                     | 
                17/24 | 0% | 1.40 | RR | Seven ryanmens | Kirov | |
| 17 | 155 | 
                     | 
                61/72 | 0% | 3.85 | EMA | Haru Shanten 2018 | Perm | |
| 18 | 733 | 
                     | 
                5/16 | 0% | 1.20 | RR | Yakuman in discard | Kirov | |
| 19 | 28 | 
                     | 
                70/72 | 0% | 3.25 | EMA | Perm Riichi 2017 Aki Shanten | Perm | |
| 20 | 667 | 
                     | 
                6/16 | 0% | 1.20 | RR | Crouching Peacock, Hidden Dragon 2017 | Kirov | |
| 21 | 933 | 
                     | 
                🥈 | 2/16 | 0% | 1.00 | RR | Third riichi mahjong tournament, Kirov 2017 | Kirov | 
| 22 | 545 | 
                     | 
                6/12 | 0% | 0.90 | CRR | Second riichi mahjong tournament, Kirov 2017 | Kirov |