After booping, check to see if you have 3 Kittens in a row. Getting three of your Kittens lined up in a row, horizontally, vertically or diagonally, graduates all three into Cats.
Gray lines up three Kittens in a row - and removes them from the game. Three adult Cats are now placed into the player’s pool.
Remove the Kittens from the board - and out of the game. (Place them in the box lid. Kittens love boxes). Then, replace those pieces with adult Cats from the reserve and place them into your pool of pieces (not onto the board). You will ALWAYS have 8 active pieces.
Alternatively, if all 8 of your pieces are on the bed, you may graduate any one Kitten, by removing it from the game and placing a Cat from reserve into your pool, or, should it be strategically important, you could place a Cat back into your pool, instead of graduating a Kitten. You do this at the end of your turn, after booping.
In the rare case if lining up more than three in a row, or multiple connected 3’s, choose which group of 3 to graduate, leaving the remaining pieces on the board. Likewise, if you have both a three in a row and eight pieces on the board, choose which you would activate.
When your move creates more than one opportunity to graduate pieces, choose one of them. Remove those pieces from the board, leaving the others in place.