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public class BishopMoves {
	public static int numBishopMoves(String square) {
		square.toUpperCase();
		
		// Convert from uppercase letter to integer representation of column 
		// number
		int col = square.charAt(0) - 64;
		// Convert from character to integer representation of row number
		int row = square.charAt(1) - 48;
		
		int numMoves = 0;
		for (int newCol = 1; newCol < 8; newCol++) {
			int offset = newCol - col;
			
			int newRowAbove = row + offset;
			if (newRowAbove >= 1 && newRowAbove <= 8) {
				numMoves++;
				System.out.println((char) (newCol+64) 
						+ (char) (newRowAbove+48));
			}
			
			int newRowBelow = row - offset;
			if (newRowBelow >= 1 && newRowBelow <= 8) {
				numMoves++;
				System.out.println((char) (newCol+64) 
						+ (char) (newRowBelow+48));
			}
		}
		
		return numMoves;
	}
}