#include "stdafx.h"
#include "stdio.h"
#include "locale.h"


int main()
{
    setlocale(LC_CTYPE, "rus");

    int X, Z;

    char Y;

    printf("Введите координаты клетки коня: ");
        scanf("%c%d", &Y, &Z);

        switch (Y)
        {
        case 'a': Y = 1;
            break;
        case 'b': Y = 2;
            break;
        case 'c': Y = 3;
            break;
        case 'd': Y = 4;
            break;
        case 'e': Y = 5;
            break;
        case 'f': Y = 6;
            break;
        case 'g': Y = 7;
            break;
        case 'h': Y = 8;
            break;
        default:
            break;
        }

        if (Y == 1 && Z == 1 || Y == 1 && Z == 8 || Y == 8 && Z == 1 || Y == 8 && Z == 8) {
        printf("Клеток под боем: 2\n");
    } else {
        if (Y == 1 && Z == 2 || Y == 1 && Z == 7 || Y == 2 && Z == 1 || Y == 2 && Z == 8 || Y == 7 && Z == 1 || Y == 7 && Z == 8 || Y == 8 && Z == 2 || Y == 8 && Z == 7) {
            printf("Клеток под боем: 3\n");
        } else {
            if (Y == 1 && Z == 3 || Y == 1 && Z == 4 || Y == 1 && Z == 5 || Y == 1 && Z == 6 || Y == 8 && Z == 3 || Y == 8 && Z == 4 || Y == 8 && Z == 5 || Y == 8 && Z == 6 || Z == 1 && Y == 3 || Z == 1 && Y == 4 || Z == 1 && Y == 5 || Z == 1 && Y == 6 || Z == 8 && Y == 3 || Z == 8 && Y == 4 || Z == 8 && Y == 5 || Z == 8 && Y == 6 || Y == 2 && Z == 2 || Y == 2 && Z == 7 || Y == 7 && Z == 2 || Y == 7 && Z == 7) {
                printf("Клеток под боем: 4\n");
            } else {
                if (Y == 2 && Z == 3 || Y == 2 && Z == 4 || Y == 2 && Z == 5 || Y == 2 && Z == 6 || Y == 7 && Z == 3 || Y == 7 && Z == 4 || Y == 7 && Z == 5 || Y == 7 && Z == 6 || Z == 2 && Y == 3 || Z == 2 && Y == 4 || Z == 2 && Y == 5 || Z == 2 && Y == 6 || Z == 7 && Y == 3 || Z == 7 && Y == 4 || Z == 7 && Y == 5 || Z == 7 && Y == 6) {
                    printf("Клеток под боем: 6\n");
                } else {
                    if (Y == 3 && Z == 3 || Y == 3 && Z == 4 || Y == 3 && Z == 5 || Y == 3 && Z == 6 || Y == 4 && Z == 3 || Y == 4 && Z == 4 || Y == 4 && Z == 5 || Y == 4 && Z == 6 || Y == 5 && Z == 3 || Y == 5 && Z == 4 || Y == 5 && Z == 5 || Y == 5 && Z == 6 || Y == 6 && Z == 3 || Y == 6 && Z == 4 || Y == 6 && Z == 5 || Y == 6 && Z == 6) {
                        printf("Клеток под боем: 8\n");
                    } else {
                        printf("Где конь, парень? 0_о \n");
                    }
                }
            }
        }
    }

    return 0;

}

what's wrong, guys? :D
P.S.: WA 1