Warning: This series is set in an alternate universe where Harry Potter was sorted into Slytherin and became best friends with Draco Malfoy.
Chapter 1: Fool's Mate
Harry Potter had been at Hogwarts for a month and so far he was enjoying it. Slytherin House had quickly accepted him as their own. Harry was the top first-year student of his house and in second place of his entire year at school, a little behind by Hermione Granger. Potions was Harry's favorite subject, as well as Draco Malfoy's. Severus Snape immediately started showing respect and liking Harry even though Severus hated Harry's father, James. Severus viewed Harry as Lily's son and not the spawn of James. Harry and Draco were Snape's best students in Potions, which caused them to earn a lot of points for Slytherin House. Pansy Parkinson, Theodore Nott, Vincent Crabbe, and Gregory Goyle spent a lot of time with Harry and Draco. It seemed safe to assume that they were all becoming close friends.
The Gryffindors disliked Harry ever since he had been sorted into Slytherin. Ron Weasley was Harry's least favorite person at Hogwarts. Ron said all sorts of snide comments about Harry being the next dark lord when Snape or any of the other professors were not present. Harry didn't let any of the things Weasley or any of the Gryffindors said about him bother him. Besides, Harry and Draco were having the time of their lives. The captain of the Slytherin Quidditch Team, Marcus Flint, allowed Harry and Draco to both try out for the team, even though they were only first-years. Lucius Malfoy sent Harry and Draco Nimbus 2000s for them to use in their first match against Gryffindor.
Draco was teaching Harry how to play Wizard's Chess. Harry was smart, but chess was not a game Harry was particularly skilled at. One day Harry and Draco decided to play a game. Harry had the white pieces and Draco had the black pieces.
"Pawn to g4", Harry said. When he did, the white pawn on g2 moved to g4.
"Pawn to e5", Draco said. The black pawn on e7 moved to e5.
"Pawn to f3", Harry said. The white pawn on f2 moved to f3. What could possibly go wrong?, Harry thought.
Draco smiled as he said, "Queen to h4." The black queen on d8 moved all the way to the other end of the diagonal to h4. Draco then said, "Checkmate."
"What?!", Harry exclaimed in shock. "The game only lasted two moves."
Draco smirked as he said, "Look at your king, Harry. It has no moves to escape the black queen's attack. This is the shortest game of chess possible, also known as 'Fool's Mate'."
"I feel like a fool", Harry groaned.
"Don't worry about it, mate", Draco said. "By losing, you learn how to play the game better. Theodore Nott and Blaise Zabini know how to play the game better than I do."