public double alphabeta(int[][] plocha, int hlbka, double alpha, double beta, int hrac){
        if((hlbka == 0) || (plna(plocha))){
            return heuristika(plocha);
        }

        if(hrac == world.BLACK_PLAYER){
            int[] tahy = world.getPossibleMoves(plocha, hrac);
            for(int i = 0; i < tahy.length; i++){
                int[][] nova = world.getResultingState(plocha, tahy[i], hrac);
                alpha = Math.max(alpha, alphabeta(nova, hlbka-1, alpha, beta, world.WHITE_PLAYER));
                if(beta<=alpha){
                    break;
                }
            }
            return alpha;
        }else{
            int[] tahy = world.getPossibleMoves(plocha, hrac);
            for(int i = 0; i < tahy.length; i++){
                int[][] nova = world.getResultingState(plocha, tahy[i], hrac);
                if (Math.min(beta, alphabeta(nova, hlbka-1, alpha, beta, world.BLACK_PLAYER)) >= 99999999){
                    System.out.println("WTFWTF:" + hlbka + " " + alpha + " " + beta + " " +alphabeta(nova, hlbka-1, alpha, beta, world.BLACK_PLAYER));
                }
                beta = Math.min(beta, alphabeta(nova, hlbka-1, alpha, beta, world.BLACK_PLAYER));
                if(beta<=alpha){  // <------ tu bola chyba
                    break;
                }
            }
            return beta;
        }
    }