Harry Potter and the Methods of Rationality

"Dueling?" said the Defense Professor. From behind it wasn't visible if the pale face was smiling. "That is nothing, Lord Greengrass, to what my students have learned. They have learned not to hesitate in the face of ambushes and greater foes. They have learned to adapt when combat conditions change and change again. They have learned to protect their allies, to protect more those who are more valuable, to abandon pieces which cannot be rescued. They have learned that to survive they must follow orders. Some have even learned a little creativity. Oh, no, Lord Greengrass, these wizards will not hide in their manors and wait to be protected, when the next threat comes. They will know that they know how to fight."

Augusta Longbottom loudly clapped her hands together three times.

We won.

It was the first thing Draco heard when he woke up on the battlefield, Padma telling him how his soldiers had rallied after he fell. How, thanks to the Dragon General's foresight, Mr. Thomas had led his detachment to victory over Chaos. How General Potter had defeated the portion of the Sunshine Regiment that clashed with him. How Mr. Thomas's Dragon Warriors had rejoined the main body of soldiers bearing both their own goggles and the sunglasses of the defeated Chaotics. How, only moments later, General Potter's remaining contingent had attacked both other armies with a potion that emitted searing purple light. But Dragon had held the numerical advantage over Sunshine and Chaos both, and enough sunglasses for their warriors; and so Padma had managed to lead her inherited army to victory.

From the light in Padma's eyes and her arrogant smile that would have done proud to a Malfoy, she was expecting congratulations. Draco managed to grit out some form of praise from between his clenched teeth, and couldn't have said afterward what it was. The foreign-born witch, it appeared, hadn't any idea what'd happened, or what it meant.

I lost.

The Dragons trudged back to Hogwarts beneath gray skies, cold droplets landing heavy on Draco's skin, one by one. While he'd been stunned, it had begun, the long-promised rain finally beginning to fall. There was only one option left to Draco now. A forced move, as Mr. MacNair, who'd taught Draco chess, would have termed it. Harry Potter probably wouldn't like it, if he really was in love with Granger the way everyone said. But the forced move, as Mr. MacNair had defined it, was one you needed to make if you wanted the game to continue at all.

It kept on playing in Draco's mind, over and over again, even as he walked like an automaton through the massive portals of Hogwarts, sent away Vincent and Gregory with two sharp words, and became alone within his private bedroom, sitting on his bed, staring at the wall above his desk. Filling his mind like a Dementor had locked him into the memory.

The grey flash coming from his glove, the lock clicking and falling away -

Draco knew, he knew what he'd done wrong. He'd been so tired after casting twenty-seven Locking Charms for all the other Dragon Warriors. Less than a minute wasn't enough time to recover after each spell. And so he'd just cast Colloportus on his own padlocked glove, just cast the spell, not put in all his strength to bind it stronger than Harry Potter or Hermione Granger could undo.

But nobody was going to believe that, even if it was true. Even in Slytherin, nobody would believe that. It sounded like an excuse, and an excuse was all that anyone would hear.

Granger whirled and spun and screamed 'ALOHOMORA!' -

Draco's mind kept playing it over and over as the resentment built. He'd helped Granger - cooperated with her on banning traitors - held her hand as she'd dangled off the roof - stopped a riot from breaking out around her in the Great Hall - did she have any idea what he'd risked, what he'd probably already lost, what it meant for the heir of House Malfoy to do that for a mudblood -

And now there was only one move left, and the thing about a forced move was that you had to make it, even if it meant getting detention and losing House points. Professor Snape would certainly understand but there were limits (Father had warned him) to what Snape would overlook.

Challenge Granger to a wizard's duel, in open defiance of Hogwarts regulations. Attack her outright, if she tried to refuse. Defeat her one-on-one, in public, not with clever dueling technique, but by overpowering her magic. Beat her solidly, completely, crush her as utterly as the Dark Lord himself had crushed his enemies. Make it absolutely clear to everyone, so that nobody could possibly doubt, that Draco had just been exhausted from casting the spell so many times. Prove that the Malfoy blood was stronger than any mudblood's -