### Flip Flop

The object of this game is to change a row of ten X’s

```
X X X X X X X X X X
```

to a row of ten 0’s

```
0 0 0 0 0 0 0 0 0 0
```

by typing in a number corresponding to the position of an “X” in the line. On some numbers one position will change while on other numbers, two will change. For example, inputting a 3 may reverse the X and 0 in position 3, but it might possibly reverse some of other position too! You ought to be able to change all 10 in 12 or fewer moves. Can you figure out a good winning strategy?

To reset the line to all X’s (same game), type 0 (zero). To start a new game at any point, type 11.

The original author of this game was Micheal Kass of New Hyde Park, New York.

---

As published in Basic Computer Games (1978):
- [Atari Archives](https://www.atariarchives.org/basicgames/showpage.php?page=63)
- [Annarchive](https://annarchive.com/files/Basic_Computer_Games_Microcomputer_Edition.pdf#page=78)

Downloaded from Vintage Basic at
http://www.vintage-basic.net/games.html

#### Porting Notes

(please note any difficulties or challenges in porting here)