You must take 8 matches and you must combine 4 matches on a ticket. There are 6 options:
Match 1 with Match 4 with Match 5 with Match 7 - this is one ticket 1. 1-4-5-7
Match 2 with Match 3 with Match 5 with Match 6 - this is another ticket 2. 2-3-5-6
Match 3 with Match 4 with Match 7 with Match 8 3. 3-4-7-8
Match 1 with Match 2 with Match 6 with Match 8 4. 1-2-6-8
Match 1 with Match 3 with Match 5 with Match 8 5. 1-3-5-8
Match 2 with Match 4 with Match 6 with Match 7 6. 2-4-6-7
At 6 matches caught, you have one winner ticket, and if you caught 7 matches you have 3 winner tickets. You can put this scheme on internet or at betting agency because you must put only 6 tickets.
In this scheme you must to put 6 tickets.