Catch Crazy Frog

First of all, the gameplay is very simple. It is to surround the frog in the picture and prevent it from running away from the side;
2. There will be several randomly distributed lit grids at the beginning of the game;
3, you need to circle a circle around the frog;
4, and the ultimate goal at this time is to make it nowhere to go
5, the final game is over, see how many steps you took