Explained in Gladstone's Games to Go, Molecular Flip is an abstract strategy game played on a 3x3 grid with 9 coins. Players flip patterns of coins within their own Flipping Square to match the patterns of a central Target Square.

From Gladstone’s Games to Go:

Here’s a game that test’s your ability to solve spatial logic problems. It’s great for solo play, but the extra pressure of playing with a group will appeal to highly competitive gamers as they race to see who can solve the problems first. Note-taking is absolutely forbidden during play.

To begin play, 9 coins are randomly mixed so that there is an arbitrary arrangement of heads and tails. You can play this game on any flat surface but a table is preferred since you’re going to want to be comfortable once you begin since play can continue for hours. With the nine coins, make three evenly spaced rows of three creating a perfect square which forms the “target square.” This process is repeated, creating a second square of nine randomly flipped heads/tails coins next to the first square. This is referred to as the “flipping square” and all of these squares are identical to their opponents’ making it an even playing field.

You’re objective is to be the first player arrange the pieces in the flipping square so that it matches the arrangement in the target square. The players who follow in order have the option of copying the preceding players’ move or if logic sees fit, to flip another “molecule” that he thinks will get the target square arrangement first and play continues in order until someone has matched the target square.

If it agreed beforehand and there are more than 2 participants in the game, the action can continue even after one player has solved the puzzle, this way there can be a second and third place winner in the game.