Hydra Wrangler: a solitaire grid manipulation game

A Hydra is like a rowdy class, with one untamed head being sufficient to get the others rowdy. In this nine-card game, flip any three cards in a row or column to tame the Hydra. But beware: when a Hydra's head flips, it can move the other heads or even flip them back to their wild side. Tame the Hydra. All its nine heads. —description from the designer