Burakov Ivan
From Tyumen, Russia
Common russian riichi rating (CRR)
Rating date Sept. 15, 2025 (latest changes Sept. 15, 2025).
240 place (155.15).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.75 * 1 + 3.50 * 1 + 3.45 * 1) = 14.8
p1 = (148.15 * 2.30 * 0.14 + 608.70 * 2.20 * 0.86 + 0 + 0 + 0) / (2.30 * 0.14 + 2.20 * 0.86 + 1 + 1 + 1) = 229.45789359625184
p2 = (608.70 * 2.20 * 0.86 + 148.15 * 2.30 * 0.14) / max_coefficients = 80.84189189189189
score = 229.45789359625184 * 0.5 + 80.84189189189189 * 0.5 = 155.14989274407185
Rating changes
Date | Place | Points | Reason |
---|---|---|---|
2025-09-15 | 232 -> 240 | 172.40 -> 155.15 |
Tails, money, two renchans: 100% -> 86% |
2025-09-14 | 233 -> 232 | 172.40 | |
2025-09-10 | 234 -> 233 | 172.40 | |
2025-09-05 | 235 -> 234 | 171.16 -> 172.40 |
Finding Dora: 29% -> 14% |
2025-09-03 | 243 -> 235 | 171.16 | |
2025-09-01 | 243 | 169.88 -> 171.16 | |
2025-08-31 | 239 -> 243 | 169.88 | |
2025-08-25 | 240 -> 239 | 169.88 | |
2025-08-22 | 241 -> 240 | 169.88 | |
2025-08-04 | 241 | 169.42 -> 169.88 |
Tournaments
# | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
---|---|---|---|---|---|---|---|---|---|
1 | 609 |
|
10/24 | 86% | 2.20 | CRR | Tails, money, two renchans | Tyumen | |
2 | 148 |
|
24/28 | 14% | 2.30 | CRR | Finding Dora | Yekaterinburg | |
3 | 103 |
|
79/88 | 0% | 3.75 | RR | Money can not buy tenpai | Perm |