Cheat for the Telegram game Lumberjack. You'll have to adapt the pixel coordinates if you want it to work.

Cheater.java

import java.awt.*;
import java.awt.event.InputEvent;

public class Cheater {
    private static final int SKY_MIN_BLUE = 250;
    private static final int default_x1 = 790;
    private static final int default_x2 = 950;
    private static final int default_y = 292;

    Robot robot;
    private int x1;
    private int x2;
    private int y;
    private boolean nextPressIsLeft = true;


    private Cheater(int x1, int x2, int y) {
        try {
            robot = new Robot();
        } catch (AWTException e) {
            System.out.println("Couldn't initialize robot.");
            return;
        }

        this.x1 = x1;
        this.x2 = x2;
        this.y = y;

    }

    private Cheater() {
        this(default_x1, default_x2, default_y);
    }

    private void run() {
        robot.mouseMove(x1, y);
        robot.mousePress(InputEvent.getMaskForButton(1));
        mySleep(50);
        robot.mouseRelease(InputEvent.getMaskForButton(1));
        while (true) {
            step();


        }
    }

    private void step() {
        boolean temp = nextPressIsLeft;
        nextPressIsLeft = isBranchOnLeft();
        chop(temp);

    }

    private void chop(boolean isLeft) {
        int keycode = isLeft ? 39 : 37;
        robot.keyPress(keycode);
        mySleep(7);
        robot.keyRelease(keycode);
        mySleep(7);
        robot.keyPress(keycode);
        mySleep(7);
        robot.keyRelease(keycode);
        mySleep(70);
    }

    private boolean isBranchOnLeft() {

        while (true) {
            Color leftColor = robot.getPixelColor(x1, y);
            Color rightColor = robot.getPixelColor(x2, y);
            int leftBlue = leftColor.getBlue();
            int rightBlue = rightColor.getBlue();
            if (leftBlue < SKY_MIN_BLUE || rightBlue < SKY_MIN_BLUE) {
                return leftBlue < SKY_MIN_BLUE;
            }

        }
    }

    private void mySleep(long ms) {
        try {
            Thread.sleep(ms);
        } catch (InterruptedException e) {
        }
    }


    public static void main(String[] args) {
        Cheater m = new Cheater();
        m.run();
    }
}