There are 4 ants in total and all the ants in a straight line i.e. 1st, 2nd, 3rd, 4th.
Condition 1 - (2 ants are in front of 2 other ants)
As all the ants in a straight line, so 1st ant and 2nd ant are in front of 3rd and 4th ants. This is condition 1 fulfilled.
Condition 2 - (2 ants are behind 2 ants)
3rd and 4th ants are behind the 1st and 2nd ants. This is condition 2 fulfilled.
Condition 3 - (2 ants are next to 2 ants)
1st and 2nd ants are next to the 3rd and 4th ants and also we can say that 3rd and 4th ants are next to 1st and 2nd ants.This is condition 3 fulfilled.
So, there are total 4 ants and all in a straight line.
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Although the experimental probability shows that playing at home gives a certain edge, mathematically the events "winning" and playing at home are completely independent since the 2 events are not linked whatsoever. Just take the example of flipping a dye. The probability of getting a Head = 1/2. If after 1000 flips you get a head, the probability of getting a Head on the 1001 flips is always 1/2 (head & tail are independent)