Elkin Denis
From Saint Petersburg, Russia
Internal rating (RR)
Rating date Oct. 10, 2025 (latest changes Oct. 9, 2025).
97 place (421.25).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.75 * 1 + 3.50 * 1 + 3.45 * 1) = 14.8
p1 = (12.66 * 3.65 * 0.71 + 452.63 * 3.85 * 0.86 + 22.47 * 3.75 * 1 + 220.34 * 3.25 * 1 + 800 * 1.90 * 1 + 391.30 * 2.10 * 0.43 + 471.43 * 3.50 * 1 + 358.21 * 4.10 * 1 + 701.30 * 3.45 * 1) / (3.65 * 0.71 + 3.85 * 0.86 + 3.75 * 1 + 3.25 * 1 + 1.90 * 1 + 2.10 * 0.43 + 3.50 * 1 + 4.10 * 1 + 3.45 * 1) = 363.91550800180437
p2 = (701.30 * 3.45 * 1 + 471.43 * 3.50 * 1 + 800 * 1.90 * 1 + 452.63 * 3.85 * 0.86) / max_coefficients = 478.5871621621621
score = 363.91550800180437 * 0.5 + 478.5871621621621 * 0.5 = 421.25133508198326
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-10-04 | 99 -> 97 | 417.90 -> 421.25 |
Riichi over Volga: 86% -> 71% |
| 2025-09-30 | 98 -> 99 | 418.08 -> 417.90 |
Seihoku spring tournament 2024: 57% -> 43% |
| 2025-09-10 | 99 -> 98 | 418.08 | |
| 2025-09-03 | 95 -> 99 | 444.90 -> 418.08 |
SPB Riichi Open 2023: 14% -> 0% |
| 2025-09-01 | 95 | 447.25 -> 444.90 |
SPB Riichi Open 2024: 100% -> 86% |
| 2025-08-31 | 114 -> 95 | 367.28 -> 447.25 |
SPB Riichi Open 2025: 0% -> 100% |
| 2025-08-04 | 116 -> 114 | 362.17 -> 367.28 |
Riichi over Volga: 100% -> 86% |
| 2025-08-03 | 115 -> 116 | 362.17 | |
| 2025-07-30 | 115 | 362.65 -> 362.17 |
Seihoku spring tournament 2024: 71% -> 57% |
| 2025-07-13 | 111 -> 115 | 362.65 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 701 |
|
24/78 | 100% | 3.45 | RR | SPB Riichi Open 2025 | Saint Petersburg | |
| 2 | 358 |
|
44/68 | 100% | 4.10 | RR | 13 bloody tiles | Perm | |
| 3 | 471 |
|
38/71 | 100% | 3.50 | RR | Riichi over The Volga 2025 | Samara | |
| 4 | 800 |
|
8/36 | 100% | 1.90 | RR | Seihoku spring tournament 2025 | Saint Petersburg | |
| 5 | 220 |
|
47/60 | 100% | 3.25 | RR | White Wolf Cup | Saint Petersburg | |
| 6 | 22 |
|
88/90 | 100% | 3.75 | RR | Moscow Riichi 2024 | Moscow | |
| 7 | 453 |
|
53/96 | 86% | 3.85 | RR | SPB Riichi Open 2024 | Saint Petersburg | |
| 8 | 13 |
|
79/80 | 71% | 3.65 | RR | Riichi over Volga | Samara | |
| 9 | 391 |
|
29/47 | 43% | 2.10 | RR | Seihoku spring tournament 2024 | Saint Petersburg | |
| 10 | 449 |
|
60/108 | 0% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg |