public static boolean verifligne(char tab[][], int pos, char comparer)
    {
	int lig = 0;
	for(int i = 0; i < tab.length; i++)
	    if(tab[i][pos-1] == comparer)
		{
		    lig = i;
		    break;
		}
	if (pos-1 != 0)
	    while(tab[lig][pos-2] == comparer)
		{
		    pos--;
		    if(pos-1 == 0)
			break;
		}
	boolean valide = false;
	if(pos < (tab[0].length - 2)) {
	    if(tab[lig][pos] == comparer && tab[lig][pos+1] == comparer && tab[lig][pos+2] == comparer)
		valide = true;
	}
	return valide;
    }