private double calculateUCB(Node node) {
		// TODO Auto-generated method stub
		double score=0;
		int currentPlayer=(initialPlayer+node.getTreeDepth())%players.size();
		if (currentPlayer==initialPlayer){
			if(node.getNumberOfSimulations()==0){
				score=Double.MAX_VALUE;

			}else{
				double c=Math.sqrt(2);

				score=(node.getScore()*1.0/node.getNumberOfSimulations())+(c*Math.sqrt(Math.log(totalSimulations/node.getNumberOfSimulations())));

			}
			System.out.println("[depth " + node.getTreeDepth() + "] num of sim = "+node.getNumberOfSimulations() +"\n" + "node score = " +node.getScore()+ " UCB score is " + score);
		}
		else{

				if(node.getNumberOfSimulations()==0){
					score=-Double.MAX_VALUE;

				}else{
					double c=Math.sqrt(2);

					score=-(node.getScore()*1.0/node.getNumberOfSimulations())+(c*Math.sqrt(Math.log(totalSimulations/node.getNumberOfSimulations())));

				}
				System.out.println("[depth " + node.getTreeDepth() + "] num of sim = "+node.getNumberOfSimulations() +"\n" + "node score = " +node.getScore()+ " UCB score is " + score);
			}

		return score;
	}