private final int CharToInteger(char c) {
		int i = -1;
		
		switch (c) {
			case 'A' : i = 0; break;
			case 'B' : i = 1; break;
			case 'C' : i = 2; break;
			case 'D' : i = 3; break;
			case 'E' : i = 4; break;
			case 'F' : i = 5; break;
			case 'G' : i = 6; break;
			case 'H' : i = 7; break;
		}
		
		return i;
	}