I have wrong answer in test 1 but I check all variants with chessboard and I get right answer
#include<stdio.h>

int function(char,int);

int main(void){
    int i,b,n;
    int arr[110];
    char a;
    scanf("%d",&n);
    for(i=1;i<=n;i++){
        scanf("%1s",&a);
        scanf("%d",&b);
        arr[i]=function(a,b);
    }
    for(i=1;i<=n;i++)
        printf("%d\n",arr[i]);
return 0;
}

int function(char a, int b){
        int kil;
        if(a>='c' && a<='f' && b>=3 && b<=6)
            kil=8;
        else
            if((((b==2) || (b==7)) && a>='c' && a<='f') || (b>=3 && b<=6 && ((a=='b') || (a=='g'))))
                kil=6;
        else
            if(((a=='a') || (a=='h')) && ((b==1) || (b==8)))
                kil=2;
        else
            if((((a=='a') || (a=='h')) && ((b==7) || (b==2))) || (((a=='b') || (a=='g')) && ((b==1) || (b==8) )))
                kil=3;
        else
            kil=4;
return kil;
}

 test №1 is
3
a1
d3
g6