我运行时遇到无法访问的代码错误，但我不知道为什么

I have an assignment where I need to create a game that lets you move a piece around a 10x10 board. You move to the "^" space and you win. This is the code I have so far but I'm having problems with it. I put a break in the code for when the player enters 9 its suppose to quit the game. When the break is in there though, I get an unreachable code error. If I take it out, the game works fine except it says game over after every input and you cant quit the game like you're suppose too. Am I putting it in the wrong spot? Or is there a better way to have the game quit if a player enters 9 for their move?I have an assignment where I need to create a g