Excluding the queen, each suit has 13 cards, that is, 7 odd cards and 6 even cards, so the probability of drawing odd numbers is 7/ 13, and the probability of drawing even numbers is 6/ 13.

When the sum of the points of two cards is even, A gets 1 point, and when it is odd, B gets 1 point, then

The probability of getting 1 min is (6/13) × (6/13)+(7/13) × (7/13) = 85/13.

The probability that b gets 1 min is: (6/13) × (7/13) × (6/13) = 84/169.

The two are unequal.

So it's unfair to both a and B.

In order to make the game fair to both sides, you only need to take out four suits of any odd card, that is, take out four cards, such as 13 (old K).