UVa 10196 - Check the check (ad hoc, chess game, tedious)

Link:https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=13&page=show_problem&problem=1137
Sol:

#include <vector>
	#include <iostream>
	using namespace std;
	bool handleStraight(const vector<string>& board, int x, int y, char target1, char target2)
	{
	if ( (x - 1 >= 0 && (board[y][x - 1] == target1 || board[y][x - 1] == target2))
	|| (x + 1 < 8 && (board[y][x + 1] == target1 || board[y][x + 1] == target2))
	|| (y - 1 >= 0 && (board[y - 1][x] == target1 || board[y - 1][x] == target2))
	|| (y + 1 < 8 && (board[y + 1][x] == target1 || board[y + 1][x] == target2)))
	return true;
	for (int xc = -1; xc + x - 1 >= 0 && board[y][xc + x] == '.'; --xc)
	if (board[y][xc + x - 1] == target1 || board[y][xc + x - 1] == target2)
	return true;
	for (int xc = 1; xc + x + 1 < 8 && board[y][xc + x] == '.'; ++xc)
	if (board[y][xc + x + 1] == target1 || board[y][xc + x + 1] == target2)
	return true;
	for (int yc = -1; yc + y - 1 >= 0 && board[y + yc][x] == '.'; --yc)
	if (board[y + yc - 1][x] == target1 || board[y + yc - 1][x] == target2)
	return true;
	for (int yc = 1; yc + y + 1 < 8 && board[y + yc][x] == '.'; ++yc)
	if (board[y + yc + 1][x] == target1 || board[y + yc + 1][x] == target2)
	return true;
	return false;
	}
	bool handleDiagonal(const vector<string>& board, int x, int y, char target1, char target2)
	{
	bool upLeft(true), upRight(true), downLeft(true), downRight(true);
	for (int c(1); upLeft || upRight || downLeft || downRight; ++c)
	{
	if (upLeft)
	{
	if (x - c >= 0 && y - c >= 0)
	{
	if (board[y - c][x - c] == target1 || board[y - c][x - c] == target2)
	return true;
	else if (board[y - c][x - c] != '.')
	upLeft = false;
	}
	else
	upLeft = false;
	}
	if (upRight)
	{
	if (x + c < 8 && y - c >= 0)
	{
	if (board[y - c][x + c] == target1 || board[y - c][x + c] == target2)
	return true;
	else if (board[y - c][x + c] != '.')
	upRight = false;
	}
	else
	upRight = false;
	}
	if (downLeft)
	{
	if (x - c >= 0 && y + c < 8)
	{
	if (board[y + c][x - c] == target1 || board[y + c][x - c] == target2)
	return true;
	else if (board[y + c][x - c] != '.')
	downLeft = false;
	}
	else
	downLeft = false;
	}
	if (downRight)
	{
	if (x + c < 8 && y + c < 8)
	{
	if (board[y + c][x + c] == target1 || board[y + c][x + c] == target2)
	return true;
	else if (board[y + c][x + c] != '.')
	downRight = false;
	}
	else
	downRight = false;
	}
	}
	return false;
	}
	bool handleKnight(const vector<string>& board, int x, int y, char target)
	{
	if (x - 2 >= 0)
	{
	if (y - 1 >= 0 && board[y - 1][x - 2] == target)
	return true;
	if (y + 1 < 8 && board[y + 1][x - 2] == target)
	return true;
	}
	if (x + 2 < 8)
	{
	if (y - 1 >= 0 && board[y - 1][x + 2] == target)
	return true;
	if (y + 1 < 8 && board[y + 1][x + 2] == target)
	return true;
	}
	if (y - 2 >= 0)
	{
	if (x - 1 >= 0 && board[y - 2][x - 1] == target)
	return true;
	if (x + 1 < 8 && board[y - 2][x + 1] == target)
	return true;
	}
	if (y + 2 < 8)
	{
	if (x - 1 >= 0 && board[y + 2][x - 1] == target)
	return true;
	if (x + 1 < 8 && board[y + 2][x + 1] == target)
	return true;
	}
	return false;
	}
	bool handlePawn(const vector<string>& board, int x, int y, char target, int yChange)
	{
	if (y + yChange < 8 && y + yChange >= 0)
	{
	if (x - 1 >= 0 && board[y + yChange][x - 1] == target)
	return true;
	if (x + 1 < 8 && board[y + yChange][x + 1] == target)
	return true;
	}
	return false;
	}
	int main()
	{
	bool forever(true);
	int whitePosx, blackPosx, whitePosy, blackPosy, temp;
	vector<string> board(8);
	for (int t = 1; forever; ++t)
	{
	whitePosx = blackPosx = -1;
	for (int i = 0; i < 8; ++i)
	{
	cin >> board[i];
	temp = board[i].find('k');
	if (temp != string::npos)
	{
	blackPosy = i;
	blackPosx = temp;
	}
	temp = board[i].find('K');
	if (temp != string::npos)
	{
	whitePosy = i;
	whitePosx = temp;
	}
	}
	if (whitePosx == -1)
	break;
	cout << "Game #" << t << ": ";
	if (handlePawn(board, whitePosx, whitePosy, 'p', -1))
	cout << "white king is in check.\n";
	else if (handlePawn(board, blackPosx, blackPosy, 'P', 1))
	cout << "black king is in check.\n";
	else if (handleKnight(board, whitePosx, whitePosy, 'n'))
	cout << "white king is in check.\n";
	else if (handleKnight(board, blackPosx, blackPosy, 'N'))
	cout << "black king is in check.\n";
	else if (handleStraight(board, whitePosx, whitePosy, 'r', 'q'))
	cout << "white king is in check.\n";
	else if (handleStraight(board, blackPosx, blackPosy, 'R', 'Q'))
	cout << "black king is in check.\n";
	else if (handleDiagonal(board, whitePosx, whitePosy, 'b', 'q'))
	cout << "white king is in check.\n";
	else if (handleDiagonal(board, blackPosx, blackPosy, 'B', 'Q'))
	cout << "black king is in check.\n";
	else
	cout << "no king is in check.\n";
	}
	}