Demurchev Mikhail
From Moscow, Russia
Internal rating (RR)
Rating date Sept. 2, 2026 (latest changes Sept. 2, 2026).
252 place (75.46).
how we calculated rating score
max_coefficients = (4.71 * 1 + 3.90 * 1 + 3.40 * 1 + 3.40 * 1) = 15.41
p1 = (224.72 * 3.75 * 0.14 + 333.33 * 3.05 * 0.43 + 0 + 0 + 0) / (3.75 * 0.14 + 3.05 * 0.43 + 1 + 1 + 1) = 114.83542066504856
p2 = (333.33 * 3.05 * 0.43 + 224.72 * 3.75 * 0.14) / max_coefficients = 36.090850097339384
score = 114.83542066504856 * 0.5 + 36.090850097339384 * 0.5 = 75.46313538119398
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-09-01 | 235 -> 252 | 142.33 -> 75.46 |
SPB Riichi Open 2024: 14% -> 0% |
| 2026-08-31 | 235 | 142.22 -> 142.33 | |
| 2026-08-16 | 228 -> 235 | 142.22 | |
| 2026-08-15 | 228 | 141.99 -> 142.22 | |
| 2026-08-13 | 228 | 146.03 -> 141.99 |
Moscow Riichi 2024: 29% -> 14% |
| 2026-08-04 | 218 -> 228 | 178.94 -> 146.03 |
Riichi over Volga: 14% -> 0% |
| 2026-08-02 | 215 -> 218 | 186.05 -> 178.94 |
Agari Winter Tournament 2025: 57% -> 43% |
| 2026-07-26 | 216 -> 215 | 186.05 | |
| 2026-07-25 | 213 -> 216 | 186.05 | |
| 2026-07-18 | 209 -> 213 | 186.05 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 333 |
|
35/52 | 43% | 3.05 | RR | Agari Winter Tournament 2025 | Moscow | |
| 2 | 225 |
|
70/90 | 14% | 3.75 | RR | Moscow Riichi 2024 | Moscow | |
| 3 | 758 |
|
24/96 | 0% | 3.85 | RR | SPB Riichi Open 2024 | Saint Petersburg | |
| 4 | 278 |
|
58/80 | 0% | 3.65 | RR | Riichi over Volga | Samara | |
| 5 | 980 |
|
🥈 | 2/52 | 0% | 3.05 | RR | Agari Summer Tournament 2024 | Moscow |
| 6 | 262 |
|
80/108 | 0% | 4.60 | RR | X Russian Championship | Perm | |
| 7 | 471 |
|
28/52 | 0% | 3.05 | RR | Agari Spring Tournament 2024 | Moscow |