Skibin Anatoliy
From Ufa, Russia
EMA: 15020035
Internal rating (RR)
Rating date Aug. 31, 2025 (latest changes Aug. 31, 2025).
75 place (496.58).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.85 * 1 + 3.75 * 1 + 3.50 * 1) = 15.2
p1 = (728.97 * 4.60 * 0.71 + 404.26 * 2.80 * 0.86 + 711.86 * 3.25 * 1 + 451.61 * 2.40 * 1 + 0) / (4.60 * 0.71 + 2.80 * 0.86 + 3.25 * 1 + 2.40 * 1 + 1) = 548.2341439371708
p2 = (728.97 * 4.60 * 0.71 + 711.86 * 3.25 * 1 + 451.61 * 2.40 * 1 + 404.26 * 2.80 * 0.86) / max_coefficients = 444.92302631578946
score = 548.2341439371708 * 0.5 + 444.92302631578946 * 0.5 = 496.5785851264801
Rating changes
| Date | Place | Points | Reason | 
|---|---|---|---|
| 2025-08-31 | 68 -> 75 | 496.58 | |
| 2025-08-09 | 70 -> 68 | 496.58 | |
| 2025-08-04 | 72 -> 70 | 494.40 -> 496.58 | |
| 2025-08-03 | 73 -> 72 | 494.40 | |
| 2025-07-14 | 71 -> 73 | 497.41 -> 494.40 | 
                        
                             Guardian of the Winds: 100% -> 86%  | 
                
| 2025-07-13 | 70 -> 71 | 497.41 | |
| 2025-07-12 | 63 -> 70 | 513.04 -> 497.41 | 
                        
                             X Russian Championship: 86% -> 71%  | 
                
| 2025-07-03 | 64 -> 63 | 513.04 | |
| 2025-06-15 | 57 -> 64 | 520.05 -> 513.04 | |
| 2025-06-11 | 59 -> 57 | 520.05 | 
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 452 | 
                     | 
                18/32 | 100% | 2.40 | RR | Riichi Maslenitsa (shrovetide) | Yekaterinburg | |
| 2 | 712 | 
                     | 
                18/60 | 100% | 3.25 | RR | White Wolf Cup | Saint Petersburg | |
| 3 | 404 | 
                     | 
                29/48 | 86% | 2.80 | RR | Guardian of the Winds | Yekaterinburg | |
| 4 | 729 | 
                     | 
                30/108 | 71% | 4.60 | RR | X Russian Championship | Perm | |
| 5 | 307 | 
                     | 
                53/76 | 0% | 4.20 | RR | IX Russian Riichi Championship | Perm | |
| 6 | 597 | 
                     | 
                28/68 | 0% | 3.50 | RR | Tenpai can't buy happiness | Perm | |
| 7 | 365 | 
                     | 
                41/64 | 0% | 3.85 | EMA | Aki Shanten 2019 | Perm | |
| 8 | 870 | 
                     | 
                4/24 | 0% | 2.20 | RR | URAL Mahjong Battle | Yekaterinburg | |
| 9 | 368 | 
                     | 
                13/20 | 0% | 2.10 | RR | Spring hope | Yekaterinburg | |
| 10 | 474 | 
                     | 
                11/20 | 0% | 2.10 | RR | Fuyu Shanten 2019 | Perm | |
| 11 | 473 | 
                     | 
                49/92 | 0% | 3.80 | EMA | VII Russian Riichi Championship "Aki Shanten" | Perm | |
| 12 | 887 | 
                     | 
                9/72 | 0% | 3.25 | EMA | Perm Riichi 2017 Aki Shanten | Perm | |
| 13 | 65 | 
                     | 
                30/32 | 0% | 2.20 | RR | Second riichi mahjong tournament, Chelyabinsk 2017 | Chelyabinsk |