Skibin Anatoliy
From Ufa, Russia
EMA: 15020035
Internal rating (RR)
Rating date Oct. 9, 2025 (latest changes Oct. 9, 2025).
75 place (478.23).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.75 * 1 + 3.50 * 1 + 3.45 * 1) = 14.8
p1 = (711.86 * 3.25 * 1 + 451.61 * 2.40 * 1 + 728.97 * 4.60 * 0.57 + 404.26 * 2.80 * 0.71 + 0) / (3.25 * 1 + 2.40 * 1 + 4.60 * 0.57 + 2.80 * 0.71 + 1) = 542.8054134954355
p2 = (711.86 * 3.25 * 1 + 728.97 * 4.60 * 0.57 + 451.61 * 2.40 * 1 + 404.26 * 2.80 * 0.71) / max_coefficients = 413.6499999999999
score = 542.8054134954355 * 0.5 + 413.6499999999999 * 0.5 = 478.22770674771766
Rating changes
| Date | Place | Points | Reason | 
|---|---|---|---|
| 2025-10-04 | 76 -> 75 | 478.23 | |
| 2025-09-14 | 76 | 481.32 -> 478.23 | 
                        
                             Guardian of the Winds: 86% -> 71%  | 
                
| 2025-09-12 | 72 -> 76 | 502.59 -> 481.32 | 
                        
                             X Russian Championship: 71% -> 57%  | 
                
| 2025-09-03 | 73 -> 72 | 502.59 | |
| 2025-09-01 | 75 -> 73 | 496.58 -> 502.59 | |
| 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%  | 
                
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 | 71% | 2.80 | RR | Guardian of the Winds | Yekaterinburg | |
| 4 | 729 | 
                     | 
                30/108 | 57% | 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 |