The efficient destruction of virus requires robot to find an optimal route, what’s we had to program it for. The robot uses the principle of right hand when making its way. It is equipped with the line-sensor of 4 mini-sensors, that allows the robot to understand on what crossing it is now and where to move further. All mini-sensors are utilized. We used the following code optimization logics: we wrote down all the robot’s actions. When it moves straight, we mark it with the letter “S”, left turn – “L”, right – “R”, and “B” is for 180 turn. We are planning to use the character array for finding optimal route in the future. The robot counts the nodal points in order to push out all the balls on the ends of maze lines. For instance, it should move straight on the first point. Our robot detects on which cross it is out of 7 possible variants and decides the direction to go next. When the maze is passed, the robot returns to the central black square. Here all mini-sensors indicate the black field and the robot ignites the laser to cut virus via optimal routing. In order to equip our robot with the “laser”, we modified the default blue color of line sensor led to red. We developed a lot of different ideas working on this project. We used the line-maze as the model of coronavirus. The “virus destroyer” was designed using the Mbot Ranger robot kit. We modified the indicator’s color on the line sensor to simulate the laser emission. And of course, we faced some difficulties. From the very beginning, the robot was unstably following the line and missed some turns. The motors were responding the signals late, making the robot to lack the turns. We resolved this by short reverse movement in the beginning of each step. Also, initially we wanted to use only third mini-sensor for routing, but single sensor appeared not sufficient. This was due to relatively long delays in receiving of the line sensor signal. As the solution we decided to utilize all mini-sensors simultaneously.