Melkov Dmitrii
From Saint Petersburg, Russia
Common russian riichi rating (CRR)
Rating date Oct. 12, 2023 (latest changes Oct. 12, 2023).
88 place (349.06).
how we calculated rating score
max_coefficients = (4.20 * 1 + 4 * 1 + 3.75 * 1 + 2.80 * 1) = 14.75
p1 = (645.16 * 1.80 * 1 + 379.31 * 3.75 * 1 + 871.79 * 1.80 * 0.86 + 177.57 * 4 * 1 + 0) / (1.80 * 1 + 3.75 * 1 + 1.80 * 0.86 + 4 * 1 + 1) = 383.61485117566014
p2 = (379.31 * 3.75 * 1 + 871.79 * 1.80 * 0.86 + 645.16 * 1.80 * 1 + 177.57 * 4 * 1) / max_coefficients = 314.5064406779661
score = 383.61485117566014 * 0.5 + 314.5064406779661 * 0.5 = 349.0606459268131
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2023-10-12 | 91 -> 88 | 348.08 -> 349.06 | |
| 2023-09-06 | 92 -> 91 | 348.08 | |
| 2023-09-03 | 70 -> 92 | 360.02 -> 348.08 |
SPB Riichi Open 2023: 0% -> 100% |
| 2023-08-27 | 63 -> 70 | 374.28 -> 360.02 |
Sun tournament: 100% -> 86% |
| 2023-08-19 | 64 -> 63 | 374.28 | |
| 2023-08-12 | 68 -> 64 | 368.09 -> 374.28 | |
| 2023-07-28 | 70 -> 68 | 368.09 | |
| 2023-07-20 | 71 -> 70 | 368.09 | |
| 2023-07-06 | 72 -> 71 | 368.09 | |
| 2023-07-03 | 73 -> 72 | 368.09 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 178 |
|
89/108 | 100% | 4.00 | RR | SPB Riichi Open 2023 |
| 2 | 379 |
|
55/88 | 100% | 3.75 | RR | Money can not buy tenpai |
| 3 | 645 |
|
12/32 | 100% | 1.80 | CRR | Earth cup |
| 4 | 872 |
|
6/40 | 86% | 1.80 | CRR | Sun tournament |
| 5 | 947 |
|
2/20 | 0% | 1.30 | CRR | Mahjong tournament at the Intellectual Games Festival 2019 |
| 6 | 400 |
|
10/16 | 0% | 1.20 | CRR | Tournament |