Although Qi Lin figured out the rules of the game and knew how to crack the game, there is an old saying?

"The ideal is very plump, realistic and very skinny."

After a single operation, there were still the last six chess pieces left on the chessboard, and these six chess pieces were like six isolated islands on the sea, without the slightest border with each other, that is, Qi Lin could no longer let any of these chess pieces move one more step.

"Cracked failed."

These words appeared on the chessboard, and then the chessboard returned to its original form.

There was still an hour and forty minutes left on the projection, and Qi Lin casually wiped off a drop of sweat that had slipped from his sideburns to his chin, took a deep breath, and pinched a chess piece again......

……

The second time it failed, there were still four pieces left on the board, and there was one hour and twenty-two minutes left in the remaining time......

……

The third time it failed, there were two pieces left on the board, and there were fifty-six minutes left......

……

When there were less than thirty minutes left, Qi Lin had to shrink his body into a ball, because the walls and ceiling had compressed this space into a cube with a side length of less than one meter, and as for the two sniper rifles, they were blindly dismantled into a pile of primitive parts by Qi Lin with both hands when he was thinking about the chess game - otherwise, the excessively long barrel would have been crushed by this ever-shrinking space.

There are still twenty-two pieces left on the chessboard, but they are divided into two distinct continents, separated by an ocean seven squares away.

Qi Lin understands that if this continues, these two "continents" will eventually become two "isolated islands" that cannot be touched, just like the last failure, only by constantly using other chess pieces as a springboard, so that these two "continents" can slowly approach under the condition of continuous reduction, so that only one chess piece can be left in the end......

Qi Lin's brain began to work frantically, calculating the next route after each move, and the ceiling of the corridor was lowering lower and lower, already attached to the back of his head and the back of his neck, and Qi Lin's elbows had to be tightly pressed against his waist, his arms crossed in front of his chest, and he laboriously used two fingers to move the virtual chess pieces one by one......

…… There were eighteen minutes left, and Qi Lin's body had been compressed to a limit, and he could even hear the bones of his whole body making a tooth-aching "creaking" sound......

As there are fewer and fewer chess pieces left, the situation is beginning to become clearer and clearer, and the speed at which Qi Lin falls is getting faster and faster - it's just that the facilities that receive Qi Lin's body movements and the speed of virtual projection changes are limited, if it is a realistic chess game, one second, with Qi Lin's speed and reaction, he can instantly move more than a dozen chess pieces, but here, he must always maintain a uniform speed that is neither fast nor slow......

"And ...... At last...... One step ......"

Finally, when one of the last two pieces was eliminated by the other, the shrinking space finally stopped, and then, at a rapid speed, it retreated in its own direction, and in less than ten seconds, the metal tunnel returned to its original appearance.

However, now Qi Lin, when he looked at the metal walls on both sides, his heart was full of defensiveness - the devil knows what tricks were waiting for him next after cracking this chess game......

"The crack is successful, and you have obtained the most basic [visitor] permission of Base 404."

The long-lost mechanical sound sounded again, and the metal wall that had blocked the road before shrank in the blink of an eye, and the dazzling red light in the corridor also changed back to its original dark blue.

"That's ...... Cleared? ”

Qi Lin took a long breath and moved the bones that were a little sore from the pressure all over his body—as long as he slowed down for another two or three minutes just now, he would definitely have to break a few bones.

"The genetic ability of the bone nightmare does not come with bone reduction, which is really a bad review......

Picking up the scattered gun parts and modules, Qi Lin assembled the Gauss sniper rifle and the PSG-1 again, and turned his back behind him.

"Hey, anyway, now you can always tell me what the hell this place is!" Qi Lin shouted at the ceiling, if you want to say that this is an arsenal, then Qi Lin will not believe it if he is killed.

The way to enter the door is actually to play chess, and if you can't pass it, you will be pressed into meat sauce alive, what is this 404 base, the first impression of Qi Lin is that it is full of bad taste, and it is quite unreliable.

"I'm sorry, your clearance is only 'visitor', and your question involves the secrets of Base 404, so I can't answer it." For the first time, the mechanical voice reacted to Qi Lin's answer, but it still did not answer Qi Lin's question.

According to the meaning of this AI system, the visitor's permission should be limited to staying inside this 404 base, or to put it more ugly, just the bare minimum that Qi Lin should not be killed as an illegal intruder...... As for other content related to the base, Qi Lin has no right to know.

"What about this...... Is there anyone still alive in Base 404? Qi Lin thought about it for a while, and changed the way he asked the question, if there were still "living people" in the base, that is, NPCs, it would be better than this rigid AI that couldn't communicate.

"Upon testing, you are the only human currently in the base with signs of life."

"......" that is, this is an empty base?

"Can you open the airtight door?"

"Request to be denied. ' Guest permissions are limited to access to the base and do not include permission to leave the base. ”

“…… the groove. After listening to the AI's answer, Qi Lin was almost angry, visitors can only visit, not leave, what kind of robber logic is this?

Could it be that a 404 base is a prison? But the prison doesn't detain people who come to visit them, does it?

Communicating with this angry AI who doesn't pay for his life will obviously lead to nothing, since he can't leave, Qi Lin still plans to walk out of this corridor first and see what it looks like inside this 404 base.

The AI refuses to tell itself the role of this base, so can't it be seen with its own eyes?

With this thought in mind, Qi Lin walked out of the corridor quickly and turned the corner-

“…… This is...... What the?! ”

What appeared in front of Qi Lin's eyes was not so much an abandoned underground base as a tragic battlefield!

This is an incomparably huge underground space, with all kinds of sci-fi style buildings lined up, and it is like a futuristic city underground—except that the city has been completely destroyed by fierce battles.

At the end of the corridor is a square of tens of thousands of square meters, and the metal floor of the square is full of human bones and scrapped power armor......

"Boom."

Qi Lin swallowed a mouthful of saliva and walked to the nearest power armor to himself, this is a T-46 power armor, this model of power armor is a very early one, it is an improved version of the first generation of power armor T-45 in the United States army, and it has a large sales volume in the military and civilian markets.

And on the chest of this T-45 power armor, there is a hole with a diameter of more than ten centimeters, which runs through the front and back, and the incision is very smooth - in Qi Lin's memory, there is no weapon at all that will cause such a strange destructive effect.

A little farther away, the other power armor was charred black, as if it had been burned by the flames, but there was no trace of burn on the metal floor beneath it......

"Here...... What the hell is this place...... What happened......? ”