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| 1st(1st leg) | Coquimbo Unido | - | Cobreloa | 1:0 | ||
| 2nd (2nd leg) | Cobreloa | - | Coquimbo Unido | 1:1 | ||
| 1st(1st leg): 11/06/2005 | 2nd (2nd leg): 18/06/2005 | Winner: Coquimbo Unido | ||||
| 1st(1st leg) | Huachipato | - | Colo-Colo | 4:0 | ||
| 2nd (2nd leg) | Colo-Colo | - | Huachipato | 0:1 | ||
| 1st(1st leg): 11/06/2005 | 2nd (2nd leg): 18/06/2005 | Winner: Huachipato | ||||
| 1st(1st leg) | Deportes Concepción | - | Universidad Católica | 1:2 | ||
| 2nd (2nd leg) | Universidad Católica | - | Deportes Concepción | 4:1 | ||
| 1st(1st leg): 12/06/2005 | 2nd (2nd leg): 19/06/2005 | Winner: Universidad Católica | ||||
| 1st(1st leg) | Unión Española | - | Universidad de Chile | 1:2 | ||
| 2nd (2nd leg) | Universidad de Chile | - | Unión Española | 2:3 pso | ||
| 1st(1st leg): 12/06/2005 | 2nd (2nd leg): 19/06/2005 | Winner: Unión Española | ||||
