The weapons that blew up little ships didn't blow up the entire planet at first. But they did cause terrible explosions. And on the planet there was no space to dissipate the chain reaction. On the planet the chain reaction found more and more fuel to feed it.
The planet's surface seemed to be moving back and forth, but soon the surface gave way to an immense explosion that sent light flashing in all directions. It swallowed up Ender's entire fleet. And then it reached the enemy ships.
The first simply vanished in the explosion. Then, as the explosion spread and became less bright, it was clear what happened to each ship. As the light reached them they flashed brightly for a moment and disappeared. They were all fuel for the fire of the planet.
It took more than three minutes for the explosion to reach the limits of the simulator, and by then it was much fainter. All the ships were gone, and if any had escaped before the explosion reached them, they were few and not worth worrying about. Where the planet had been there was nothing. The simulator was empty.
Ender had destroyed the enemy by sacrificing his entire fleet and breaking the rule against destroying the enemy planet. He wasn't sure whether to feel triumphant at his victory or defiant at the rebuke he was certain would come. So instead he felt nothing. He was tired. He wanted to go to bed and sleep.
He switched off the simulator, and finally heard the noise behind him.
There were no longer two rows of dignified military observers. Instead there was chaos. Some of them were slapping each other on the back, some of them were bowed, head in hands, others were openly weeping. Captain Graff detached himself from the group and came to Ender. Tears streamed down his face, but he was smiling. He reached out his arms, and to Ender's surprise he embraced the boy, held him tightly, and whispered, "Thank you, thank you, thank you, Ender."
Soon all the observers were gathered around the bewildered child, thanking him and cheering him and patting him on the shoulder and shaking his hand. Ender tried to make sense of what they were saying. Had he passed the test after all? Why did it matter so much to them?
Then the crowd parted and Mazer Rackham walked through. He came straight up to Ender Wiggin and held out his hand.
"You made the hard choice, boy. But heaven knows there was no other way you could have done it. Congratulations. You beat them, and it's all over."
All over. Beat them. "I beat you, Mazer Rackham."
Mazer laughed, a loud laugh that filled the room. "Ender Wiggin, you never played me. You never played a game since I was your teacher."
Ender didn't get the joke. He had played a great many games, at a terrible cost to himself. He began to get angry.
Mazer reached out and touched his shoulder. Ender shrugged him off. Mazer then grew serious and said, "Ender Wiggin for the last months you have been the commander of our fleets. There were no games. The battles were real. Your only enemy was the enemy. You won every battle. And finally today you fought them at their home world, and you destroyed their world, their fleet, you destroyed them completely, and they'll never come against us again. You did it. You."
Real. Not a game. Ender's mind was too tired to cope with it all. He walked away from Mazer, walked silently through the crowd that still whispered thanks and congratulations to the boy, walked out of the simulator room and finally arrived in his bedroom and closed the door.
He was asleep when Graff and Mazer Rackham found him. They came in quietly and roused him. He awoke slowly, and when he recognized them he turned away to go back to sleep.
"Ender," Graff said. "We need to talk to you."
Ender rolled back to face them. He said nothing.
Graff smiled. "It was a shock to you yesterday, I know. But it must make you feel good to know you won the war."
Ender nodded slowly.
"Mazer Rackham here, he never played against you. He only analyzed your battles to find out your weak spots, to help you improve. It worked, didn't it?"
Ender closed his eyes tightly. They waited. He said, "Why didn't you tell me?"
Mazer smiled. "A hundred years ago, Ender, we found out some things. That when a commander's life is in danger he becomes afraid, and fear slows down his thinking. When a commander knows that he's killing people, he becomes cautious or insane, and neither of those help him do well. And when he's mature, when he has responsibilities and an understanding of the world, he becomes cautious and sluggish and can't do his job. So we trained children, who didn't know anything but the game, and never knew when it would become real. That was the theory, and you proved that the theory worked."
Graff reached out and touched Ender's shoulder. "We launched the ships so that they would all arrive at their destination during these few months. We knew that we'd probably have only one good commander, if we were lucky. In history it's been very rare to have more than one genius in a war. So we planned on having a genius. We were gambling. And you came along and we won."
Ender opened his eyes again and they realized that he was angry. "Yes, you won."
Graff and Mazer Rackham looked at each other. "He doesn't understand," Graff whispered.
"I understand," Ender said. "You needed a weapon, and you got it, and it was me."
"That's right," Mazer answered.
"So tell me," Ender went on, "how many people lived on that planet that I destroyed."
They didn't answer him. They waited awhile in silence, and then Graff spoke. "Weapons don't need to understand what they're pointed at, Ender. We did the pointing, and so we're responsible. You just did your job."