public boolean findAtSE(int piece, int x, int y){
		if(x==7 || y==7 || b.get(x+1,y+1)==EMPTY_PIECE) return false;
		else if(b.get(x+1,y+1)==piece) return true;
		else return findAtSE(piece,x+1,y+1); // there is an opponent
	} // end findAtSE