Sychev Ivan
From Saint Petersburg, Russia
EMA: 15990298
Common russian riichi rating (CRR)
Rating date Nov. 6, 2026 (latest changes Nov. 4, 2026).
342 place (100.76).
how we calculated rating score
max_coefficients = (4.71 * 1 + 3.40 * 1 + 3.40 * 1 + 3.40 * 1) = 14.91
p1 = (444.44 * 2 * 0.57 + 193.55 * 1.80 * 1 + 0 + 0 + 0) / (2 * 0.57 + 1.80 * 1 + 1 + 1 + 1) = 144.09032779161336
p2 = (444.44 * 2 * 0.57 + 193.55 * 1.80 * 1) / max_coefficients = 57.431254191817565
score = 144.09032779161336 * 0.5 + 57.431254191817565 * 0.5 = 100.76079099171547
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-11-04 | 343 -> 342 | 99.83 -> 100.76 | |
| 2026-11-01 | 339 -> 343 | 99.83 | |
| 2026-10-31 | 336 -> 339 | 99.83 | |
| 2026-10-24 | 333 -> 336 | 99.83 | |
| 2026-10-16 | 335 -> 333 | 99.83 | |
| 2026-10-14 | 331 -> 335 | 110.84 -> 99.83 |
Tonpu-master: 71% -> 57% |
| 2026-10-13 | 335 -> 331 | 110.84 | |
| 2026-10-10 | 334 -> 335 | 110.84 | |
| 2026-10-02 | 335 -> 334 | 110.84 | |
| 2026-09-26 | 334 -> 335 | 110.84 |