Flip-Flop

Flip-Flop is a remake of an old basic game by Michael Kass. It was ported to  a mixture of assembler and C but some part was left in basic just for the fun of it. We hope that you enjoy the game  as well.

The objective of the game is flip ten  slots in their "set" position depicted  with a filled box into their "unset" position depicted  by an empty box. Flipping is done by typing the number of the slot, which is displayed at the top. On some numbers one position will change while on other numbers, two will change. In higher levels two additional slots   may change. Can you figure out a viable winning strategy?

For the original BASIC game see https://www.atariarchives.org/basicgames/showpage.php?page=63. More information on the CSDB page.