#include <stdio.h>
#include <stdlib.h>

char pieces[12][12];
char gameBoard [12][12];
int i,j;

void gameBoardBorders(){
    for (i=0;i<12;i++){
        for (j=0;j<12;j++){
            gameBoard[i][j]='\0';
        }
    }
    for (i=0;i<12;i+=11){
        for (j=2;j<10;j++){
            gameBoard[i][j]='A'+(j-2);
        }
    }
    for (j=2;j<10;j++){
        gameBoard[1][j]='-';
        gameBoard[10][j]='-';
    }
    for (i=2;i<10;i++){
        for (j=0;j<12;j+=11){
            gameBoard[i][j]='8'-(i-2);
        }
    }
    for (i=2;i<10;i++){
        gameBoard[i][1]='|';
        gameBoard[i][10]='|';
    }

}

void checkerBoard(){
    for (i=2;i<10;i++){
        for (j=2;j<10;j+=2){
            if (i%2==0){
                gameBoard[i][j]='.';
            }
            else {
                gameBoard[i][j]='+';
            }
        }
    }
    for (i=2;i<10;i++){
        for (j=3;j<10;j+=2){
            if (i%2==0){
                gameBoard[i][j]='+';
            }
            else {
                gameBoard[i][j]='.';
            }
        }
    }
}

void startingChessBoard(){
    for (i=0;i<12;i++){
        for(j=0;j<12;j++){
            pieces[i][j]='\0';
        }
    }
    pieces[2][2]= 'R';
    pieces[2][3]= 'N';
    pieces[2][4]= 'B';
    pieces[2][5]= 'Q';
    pieces[2][6]= 'K';
    pieces[2][7]= 'B';
    pieces[2][8]= 'N';
    pieces[2][9]= 'R';

    pieces[9][2]= 'r';
    pieces[9][3]= 'n';
    pieces[9][4]= 'b';
    pieces[9][5]= 'q';
    pieces[9][6]= 'k';
    pieces[9][7]= 'b';
    pieces[9][8]= 'n';
    pieces[9][9]= 'r';

    for(j=2;j<10;j++){
        pieces[3][j]= 'P';
    }

    for(j=2;j<10;j++){
        pieces[8][j]= 'p';
    }
}

void printGame (){
    for (i=0;i<12;i++){
        for (j=0;j<12;j++){
            printf("%c",gameBoard[i][j]);
            printf("%c ", pieces[i][j]);
        }
        printf("\n\n");
    }
}

void swapElements (int swap[]){
    pieces[swap[1]][swap[0]]=pieces[swap[1]][swap[0]]^pieces[swap[3]][swap[2]];
    pieces[swap[3]][swap[2]]=pieces[swap[3]][swap[2]]^pieces[swap[1]][swap[0]];
    pieces[swap[1]][swap[0]]=pieces[swap[1]][swap[0]]^pieces[swap[3]][swap[2]];
}

int main()
{
    char pieces[12][12];
    char gameBoard [12][12];
    int i,j;
    startingChessBoard();
    gameBoardBorders();
    checkerBoard();
    printGame();
    char play[5];
    int swap[5];
    char temp;
    while (1){
        printf("Player1 : ");
        scanf("%s",play);
        swap[0]=play[0]-63;
        swap[1]=58-play[1];
        swap[2]=play[2]-63;
        swap[3]=58-play[3];
        swapElements(swap);
        printGame();
    }
    return 0;
}