Melkov Dmitrii
From Saint Petersburg, Russia
Internal rating (RR)
Rating date Jan. 3, 2025 (latest changes Jan. 3, 2025).
71 place (425.85).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (379.31 * 3.75 * 0.43 + 177.57 * 4 * 0.57 + 826.09 * 2.10 * 1 + 579.44 * 4.60 * 1 + 333.33 * 3.05 * 1) / (3.75 * 0.43 + 4 * 0.57 + 2.10 * 1 + 4.60 * 1 + 3.05 * 1) = 471.4828646507145
p2 = (579.44 * 4.60 * 1 + 826.09 * 2.10 * 1 + 333.33 * 3.05 * 1 + 379.31 * 3.75 * 0.43) / max_coefficients = 380.22208201892744
score = 471.4828646507145 * 0.5 + 380.22208201892744 * 0.5 = 425.85247333482096
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-01-03 | 76 -> 71 | 419.94 -> 425.85 |
SPB Riichi Open 2023: 71% -> 57% |
| 2024-12-11 | 75 -> 76 | 424.89 -> 419.94 |
Money can not buy tenpai: 57% -> 43% |
| 2024-11-06 | 78 -> 75 | 424.89 | |
| 2024-11-03 | 82 -> 78 | 419.69 -> 424.89 |
SPB Riichi Open 2023: 86% -> 71% |
| 2024-10-13 | 72 -> 82 | 423.76 -> 419.69 | |
| 2024-10-11 | 72 | 429.17 -> 423.76 |
Money can not buy tenpai: 71% -> 57% |
| 2024-09-06 | 73 -> 72 | 429.17 | |
| 2024-09-03 | 74 -> 73 | 417.18 -> 429.17 |
SPB Riichi Open 2023: 100% -> 86% |
| 2024-09-01 | 64 -> 74 | 427.63 -> 417.18 | |
| 2024-08-11 | 66 -> 64 | 431.09 -> 427.63 |
Money can not buy tenpai: 86% -> 71% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 579 |
|
46/108 | 100% | 4.60 | RR | X Russian Championship |
| 2 | 826 |
|
9/47 | 100% | 2.10 | RR | Seihoku spring tournament 2024 |
| 3 | 333 |
|
35/52 | 100% | 3.05 | RR | Agari Spring Tournament 2024 |
| 4 | 178 |
|
89/108 | 57% | 4.00 | RR | SPB Riichi Open 2023 |
| 5 | 379 |
|
55/88 | 43% | 3.75 | RR | Money can not buy tenpai |