Berserker (Collection) Read online

  Berserker

  Fred Saberhagen

  INTRODUCTION

  I, third historian of the Carmpan race, in gratitude to the Earth-descended race for their defense of my world, set down here for them my fragmentary vision of their great war against our common enemy.

  The vision has been formed piece by piece through my contacts in past and present time with the minds of men and of machines. In these minds alien to me I often perceive what I cannot understand, yet what I see is true. And so I have truly set down the acts and words of Earth-descended men great and small and ordinary, the words and even the secret thoughts of your heroes and your traitors.

  Looking into the past I have seen how in the twentieth century of your Christian calendar your forefathers on Earth first built radio detectors capable of sounding the deeps of interstellar space. On the day when whispers in our alien voices were first detected, straying in across the enormous intervals, the universe of stars became real to all Earth’s nations and all her tribes.

  They became aware of the real world surrounding them—a universe strange and immense beyond thought, possibly hostile, surrounding and shrinking all Earthmen alike. Like island savages just become aware of the great powers existing on and beyond their ocean, your nations began—sullenly, mistrustfully, almost against their will—to put aside their quarrels with one another.

  In the same century the men of old Earth took their first steps into space. They studied our alien voices whenever they could hear us. And when the men of old Earth began to travel faster than light, they followed our voices to seek us out.

  Your race and mine studied each other with eager science and with great caution and courtesy. We Carmpan and our older friends are more passive than you. We live in different environments and think mainly in different directions. We posed no threat to Earth. We saw to it that Earthmen were not crowded by our presence; physically and mentally they had to stretch to touch us. Ours, all the skills of keeping peace. Alas, for the day unthinkable that was to come, the day when we wished ourselves warlike!

  You of Earth found uninhabited planets, where you could thrive in the warmth of suns much like your own. In large colonies and small you scattered yourselves across one segment of one arm of our slow-turning galaxy. To your settlers and frontiersmen the galaxy began to seem a friendly place, rich in worlds hanging ripe for your peaceful occupation.

  The alien immensity surrounding you appeared to be not hostile after all. Imagined threats had receded behind horizons of silence and vastness. And so once more you allowed among yourselves the luxury of dangerous conflict, carrying the threat of suicidal violence.

  No enforceable law existed among the planets. On each of your scattered colonies individual leaders maneuvered for personal power, distracting their people with real or imagined dangers posed by other Earth-descended men.

  All further exploration was delayed, in the very days when the new and inexplicable radio voices were first heard drifting in from beyond your frontiers, the strange soon-to-be-terrible voices that conversed only in mathematics. Earth and Earth’s colonies were divided each against all by suspicion, and in mutual fear were rapidly training and arming for war.

  And at this point the very readiness for violence that had sometimes so nearly destroyed you, proved to be the means of life’s survival. To us, the Carmpan watchers, the withdrawn seers and touchers of minds, it appeared that you had carried the crushing weight of war through all your history knowing that it would at last be needed, that this hour would strike when nothing less awful would serve.

  When the hour struck and our enemy came without warning, you were ready with swarming battlefleets. You were dispersed and dug in on scores of planets, and heavily armed. Because you were, some of you and some of us are now alive.

  Not all our Carmpan psychology, our logic and vision and subtlety, would have availed us anything. The skills of peace and tolerance were useless, for our enemy was not alive.

  What is thought, that mechanism seems to bring it forth?

  WITHOUT A THOUGHT

  The machine was a vast fortress, containing no life, set by its long-dead masters to destroy anything that lived. It and many others like it were the inheritance of Earth from some war fought between unknown interstellar empires, in some time that could hardly be connected with any Earthly calendar.

  One such machine could hang over a planet colonized by men and in two days pound the surface into a lifeless cloud of dust and steam, a hundred miles deep. This particular machine had already done just that.

  It used no predictable tactics in its dedicated, unconscious war against life. The ancient, unknown gamesmen had built it as a random factor, to be loosed in the enemy’s territory to do what damage it might. Men thought its plan of battle was chosen by the random disintegrations of atoms in a block of some long-lived isotope buried deep inside it, and so was not even in theory predictable by opposing brains, human or electronic.

  Men called it a berserker.

  Del Murray, sometime computer specialist, had called it other names than that; but right now he was too busy to waste breath, as he moved in staggering lunges around the little cabin of his one-man fighter, plugging in replacement units for equipment damaged by the last near-miss of a berserker missile. An animal resembling a large dog with an ape’s forelegs moved around the cabin too, carrying in its nearly human hands a supply of emergency sealing patches. The cabin air was full of haze. Wherever movement of the haze showed a leak to an unpressurized part of the hull, the dog-ape moved to apply a patch.

  “Hello, Foxglove!” the man shouted, hoping that his radio was again in working order.

  “Hello, Murray, this is Foxglove,” said a sudden loud voice in the cabin. “How far did you get?”

  Del was too weary to show much relief that his communications were open again. “I’ll let you know in a minute. At least it’s stopped shooting at me for a while. Move, Newton.” The alien animal, pet and ally, called an aiyan, moved away from the man’s feet and kept singlemindedly looking for leaks.

  After another minute’s work Del could strap his body into the deep-cushioned command chair again, with something like an operational panel before him. That last near-miss had sprayed the whole cabin with fine penetrating splinters. It was remarkable that man and aiyan had come through unwounded.

  His radar working again, Del could say: “I’m about ninety miles out from it, Foxglove. On the opposite side from you.” His present position was the one he had been trying to achieve since the battle had begun.

  The two Earth ships and the berserker were half a light year from the nearest sun. The berserker could not leap out of normal space, toward the defenseless colonies of the planets of that sun, while the two ships stayed close to it. There were only two men aboard Foxglove. They had more machinery working for them than did Del, but both manned ships were mites compared to their opponent.

  Del’s radar showed him an ancient ruin of metal, not much smaller in cross section than New Jersey. Men had blown holes in it the size of Manhattan Island, and melted puddles of slag as big as lakes upon its surface.

  But the berserker’s power was still enormous. So far no man had fought it and survived. Now, it could squash Del’s little ship like a mosquito; it was wasting its unpredictable subtlety on him. Yet there was a special taste of terror in the very difference of it. Men could never frighten this enemy, as it frightened them.

  Earthmen’s tactics, worked out from bitter experience against other berserkers, called for a simultaneous attack by three ships. Foxglove and Murray made two. A third was supposedly on the way, but still about eight hours distant, moving at C-plus velocity, outside of normal space. Until it arrived, Foxglove and Murray m
ust hold the berserker at bay, while it brooded unguessable schemes.

  It might attack either ship at any moment, or it might seek to disengage. It might wait hours for them to make the first move—though it would certainly fight if the men attacked it. It had learned the language of Earth’s spacemen—it might try to talk with them. But always, ultimately, it would seek to destroy them and every other living thing it met. That was the basic command given it by the ancient warlords.

  A thousand years ago, it would easily have swept ships of the type that now opposed it from its path, whether they carried fusion missiles or not. Now, it was in some electrical way conscious of its own weakening by accumulated damage. And perhaps in long centuries of fighting its way across the galaxy it had learned to be wary.

  Now, quite suddenly, Del’s detectors showed force fields forming in behind his ship. Like the encircling arms of a huge bear they blocked his path away from the enemy. He waited for some deadly blow, with his hand trembling over the red button that would salvo his atomic missiles at the berserker—but if he attacked alone, or even with Foxglove, the infernal machine would parry their missiles, crush their ships, and go on to destroy another helpless planet. Three ships were needed to attack. The red firing button was now only a last desperate resort.

  Del was reporting the force fields to Foxglove when he felt the first hint in his mind of another attack.

  “Newton!” he called sharply, leaving the radio connection with Foxglove open. They would hear and understand what was going to happen.

  The aiyan bounded instantly from its combat couch to stand before Del as if hypnotized, all attention riveted on the man. Del had sometimes bragged: “Show Newton a drawing of different-colored lights, convince him it represents a particular control panel, and he’ll push buttons or whatever you tell him, until the real panel matches the drawing.”

  But no aiyan had the human ability to learn and to create on an abstract level; which was why Del was now going to put Newton in command of his ship.

  He switched off the ship’s computers—they were going to be as useless as his own brain under the attack he felt gathering—and said to Newton: “Situation Zombie.”

  The animal responded instantly as it had been trained, seizing Del’s hands with firm insistence and dragging them one at a time down beside the command chair to where the fetters had been installed.

  Hard experience had taught men something about the berserkers’ mind weapon, although its principles of operation were still unknown. It was slow in its onslaught, and its effects could not be steadily maintained for more than about two hours, after which a berserker was evidently forced to turn it off for an equal time. But while in effect, it robbed any human or electronic brain of the ability to plan or to predict—and left it unconscious of its own incapacity.

  It seemed to Del that all this had happened before, maybe more than once. Newton, that funny fellow, had gone too far with his pranks; he had abandoned the little boxes of colored beads that were his favorite toys, and was moving the controls around at the lighted panel. Unwilling to share the fun with Del, he had tied the man to his chair somehow. Such behavior was really intolerable, especially when there was supposed to be a battle in progress. Del tried to pull his hands free, and called to Newton.

  Newton whined earnestly, and stayed at the panel.

  “Newt, you dog, come lemme loose. I know what I have to say: Four score and seven … hey, Newt, where’re your toys? Lemme see your pretty beads.” There were hundreds of tiny boxes of the varicolored beads, leftover trade goods that Newton loved to sort out and handle. Del peered around the cabin, chuckling a little at his own cleverness. He would get Newton distracted by the beads, and then … the vague idea faded into other crackbrained grotesqueries.

  Newton whined now and then but stayed at the panel moving controls in the long sequence he had been taught, taking the ship through the feinting, evasive maneuvers that might fool a berserker into thinking it was still competently manned. Newton never put a hand near the big red button. Only if he felt deadly pain himself, or found a dead man in Del’s chair, would he reach for that.

  “Ah, roger, Murray,” said the radio from time to time, as if acknowledging a message. Sometimes Foxglove added a few words or numbers that might have meant something. Del wondered what the talking was about.

  At last he understood that Foxglove was trying to help maintain the illusion that there was still a competent brain in charge of Del’s ship. The fear reaction came when he began to realize that he had once again lived through the effect of the mind weapon. The brooding berserker, half genius, half idiot, had forborne to press the attack when success would have been certain—perhaps deceived, perhaps following the strategy that avoided predictability at almost any cost.

  “Newton.” The animal turned, hearing a change in his voice. Now Del could say the words that would tell Newton it was safe to set his master free, a sequence too long for anyone under the mind weapon to recite.

  “—shall not perish from the earth,” he finished. With a yelp of joy Newton pulled the fetters from Del’s hands. Del turned instantly to the radio.

  “Effect has evidently been turned off, Foxglove,” said Del’s voice through the speaker in the cabin of the larger ship.

  The Commander let out a sigh. “He’s back in control!”

  The Second Officer—there was no third—said: “That means we’ve got some kind of fighting chance, for the next two hours. I say let’s attack now!”

  The Commander shook his head, slowly but without hesitation. “With two ships, we don’t have any real chance. Less than four hours until Gizmo gets here. We have to stall until then, if we want to win.”

  “It’ll attack the next time it gets Del’s mind scrambled! I don’t think we fooled it for a minute … we’re out of range of the mind beam here, but Del can’t withdraw now. And we can’t expect that aiyan to fight his ship for him. We’ll really have no chance, with Del gone.”

  The Commander’s eyes moved ceaselessly over his panel. “We’ll wait. We can’t be sure it’ll attack the next time it puts the beam on him … ”

  The berserker spoke suddenly, its radioed voice plain in the cabins of both ships: “I have a proposition for you, little ship.” Its voice had a cracking, adolescent quality, because it strung together words and syllables recorded from the voices of human prisoners of both sexes and different ages. Bits of human emotion, sorted and fixed like butterflies on pins, thought the Commander. There was no reason to think it had kept the prisoners alive after learning the language from them.

  “Well?” Del’s voice sounded tough and capable by comparison.

  “I have invented a game which we will play,” it said. “If you play well enough, I will not kill you right away.”

  “Now I’ve heard everything,” murmured the Second Officer.

  After three thoughtful seconds the Commander slammed a fist on the arm of his chair. “It means to test his learning ability, to run a continuous check on his brain while it turns up the power of the mind beam and tries different modulations. If it can make sure the mind beam is working, it’ll attack instantly. I’ll bet my life on it. That’s the game it’s playing this time.”

  “I will think over your proposition,” said Del’s voice coolly.

  The Commander said: “It’s in no hurry to start. It won’t be able to turn on the mind beam again for almost two hours.”

  “But we need another two hours beyond that.”

  Del’s voice said: “Describe the game you want to play.”

  “It is a simplified version of the human game called checkers.”

  The Commander and the Second looked at each other, neither able to imagine Newton able to play checkers. Nor could they doubt that Newton’s failure would kill them within a few hours, and leave another planet open to destruction.

  After a minute’s silence, Del’s voice asked: “What’ll we use for a board?”

  “We will radio our moves to o
ne another,” said the berserker equably. It went on to describe a checkers-like game, played on a smaller board with less than the normal number of pieces. There was nothing very profound about it; but, of course, playing would seem to require a functional brain, human or electronic, able to plan and to predict.

  “If I agree to play,” said Del slowly, “how’ll we decide who gets to move first?”

  “He’s trying to stall,” said the Commander, gnawing a thumbnail. “We won’t be able to offer any advice, with that thing listening. Oh, stay sharp, Del boy!”

  “To simplify matters,” said the berserker, “I will move first in every game.”

  Del could look forward to another hour free of the mind weapon when he finished rigging the checkerboard. When the pegged pieces were moved, appropriate signals would be radioed to the berserker; lighted squares on the board would show him where its pieces were moved. If it spoke to him while the mind weapon was on, Del’s voice would answer from a tape, which he had stocked with vaguely aggressive phrases, such as: “Get on with the game,” or “Do you want to give up now?”

  He hadn’t told the enemy how far along he was with his preparations because he was still busy with something the enemy must not know—the system that was going to enable Newton to play a game of simplified checkers.

  Del gave a soundless little laugh as he worked, and glanced over to where Newton was lounging on his couch, clutching toys in his hands as if he drew some comfort from them. This scheme was going to push the aiyan near the limit of his ability, but Del saw no reason why it should fail.

  Del had completely analyzed the miniature checker game, and diagrammed every position that Newton could possibly face—playing only even-numbered moves, thank the random berserker for that specification!—on small cards. Del had discarded some lines of play that would arise from some poor early moves by Newton, further simplifying his job. Now, on a card showing each possible remaining position, Del indicated the best possible move with a drawn-in arrow. Now he could quickly teach Newton to play the game by looking at the appropriate card and making the move shown by the arrow—