How to Play: Cat's Gambit

About Cat's Gambit, from BoardGameGeek:

Cat's Gambit is an 18-card solo chess puzzle. In the game, the player places cards representing chess pieces in a 4x4 grid. The goal is to play all the cards and avoid checkmate by the four cat-kens (cat kraken). Each turn, the player plays a card until an endgame condition is met. If the queen is checked twice during the game, the game ends immediately. Otherwise, at the end of the game, points are totaled to determine the player's royal ranking within the glorious kingdom of cat-mermaids.