Ermolaev Andrei
From Sarov, Russia
EMA: 15990413
Common russian riichi rating (CRR)
Rating date May 13, 2026 (latest changes May 12, 2026).
233 place (231.66).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.45 * 1 + 3.40 * 1) = 14.85
p1 = (478.26 * 2.80 * 0.57 + 492.54 * 4.10 * 1 + 32.26 * 3 * 1 + 0 + 0) / (2.80 * 0.57 + 4.10 * 1 + 3 * 1 + 1 + 1) = 269.2870600901689
p2 = (492.54 * 4.10 * 1 + 478.26 * 2.80 * 0.57 + 32.26 * 3 * 1) / max_coefficients = 194.03030303030303
score = 269.2870600901689 * 0.5 + 194.03030303030303 * 0.5 = 231.65868156023595
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-05-12 | 211 -> 233 | 271.86 -> 231.66 |
X Russian Championship: 14% -> 0% |
| 2026-05-11 | 208 -> 211 | 271.86 | |
| 2026-05-05 | 210 -> 208 | 271.86 | |
| 2026-05-03 | 207 -> 210 | 271.11 -> 271.86 | |
| 2026-05-01 | 208 -> 207 | 271.11 | |
| 2026-04-29 | 209 -> 208 | 271.11 | |
| 2026-04-19 | 198 -> 209 | 271.11 | |
| 2026-04-16 | 201 -> 198 | 271.11 | |
| 2026-04-13 | 202 -> 201 | 271.11 | |
| 2026-04-11 | 193 -> 202 | 271.11 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 32 |
|
31/32 | 100% | 3.00 | RR | Final Cup 2025 | Moscow | |
| 2 | 493 |
|
35/68 | 100% | 4.10 | RR | 13 bloody tiles | Perm | |
| 3 | 478 |
|
13/24 | 57% | 2.80 | CRR | Riichi never changing | Moscow | |
| 4 | 664 |
|
37/108 | 0% | 4.60 | RR | X Russian Championship | Perm | |
| 5 | 870 |
|
4/24 | 0% | 2.80 | CRR | Meeting in the billiard room | Moscow | |
| 6 | 667 |
|
26/76 | 0% | 4.20 | RR | IX Russian Riichi Championship | Perm | |
| 7 | 164 |
|
47/56 | 0% | 3.30 | RR | Kirov Tournament | Kirov | |
| 8 | 128 |
|
35/40 | 0% | 2.90 | EMA | Big open chiitoitsu in a small tenpai | Kirov | |
| 9 | 852 |
|
5/28 | 0% | 2.60 | RR | And yet the sinner collects tanyao | Kirov | |
| 10 | 590 |
|
35/84 | 0% | 4.20 | EMA | Haru Shanten 2019 | Perm | |
| 11 | 383 |
|
30/48 | 0% | 3.10 | RR | Agari team tournament 2019 | Moscow |