Maniakhin Petr
From Saint Petersburg, Russia
EMA: 15990315
Internal rating (RR)
Rating date April 17, 2026 (latest changes April 16, 2026).
76 place (477.66).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95
p1 = (494.74 * 3.85 * 0.43 + 169.49 * 3.25 * 0.71 + 885.71 * 1.90 * 1 + 584.42 * 3.45 * 1 + 540.54 * 3.40 * 1) / (3.85 * 0.43 + 3.25 * 0.71 + 1.90 * 1 + 3.45 * 1 + 3.40 * 1) = 530.3403624626964
p2 = (584.42 * 3.45 * 1 + 540.54 * 3.40 * 1 + 885.71 * 1.90 * 1 + 494.74 * 3.85 * 0.43) / max_coefficients = 424.9698996655518
score = 530.3403624626964 * 0.5 + 424.9698996655518 * 0.5 = 477.6551310641241
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-04-16 | 77 -> 76 | 471.30 -> 477.66 |
White Wolf Cup: 86% -> 71% |
| 2026-04-13 | 79 -> 77 | 471.30 | |
| 2026-04-11 | 78 -> 79 | 471.30 | |
| 2026-04-05 | 79 -> 78 | 471.30 | |
| 2026-04-02 | 80 -> 79 | 471.30 | |
| 2026-03-14 | 82 -> 80 | 471.30 | |
| 2026-03-12 | 84 -> 82 | 471.30 | |
| 2026-03-02 | 85 -> 84 | 471.30 | |
| 2026-03-01 | 81 -> 85 | 479.94 -> 471.30 |
SPB Riichi Open 2024: 57% -> 43% |
| 2026-02-23 | 97 -> 81 | 407.90 -> 479.94 |
White Wolf Cup 2026: 0% -> 100% |