Use the arrows to move the players. (Or wasd.) So there is kind of a bug that umm only will let you try 2 times and it'll will show blank after. I have no idea how to fix it but if you know tell me in comments.
At first this game looks VERY easy. But in depth it will make you Rage quit. I hope you don't get too mad and smash your computer. (ACTUALLY Don't do that.) BUT word of warning.... ITS ALMOST IMPOSSIBLE!!!!!!! Credit to @griffpatch