---
# System prepended metadata

title: '[EN] Redstone'
tags: [Chinese, Writeup, Reverse]

---

> [name=FlyDragon]

## Step.1
Import the map file and you'll notice there is a redstone mechanism, and the goal is to activate the final redstone lamp.

![](https://hackmd.io/_uploads/HJW_xFXi3.png)


## Step.2
In fact, you can break down the problem into several logic gates; passing each one will lead you to the flag. There are also unnecessary components within the setup (e.g., NOT+NOT). It's better to remove these unnecessary parts before attempting to solve the puzzle.

*Using control levers and other tools can assist you.

### Tips for the right side of the setup

On the right side, there is an XOR gate, and the output must be `1` in order to proceed.

![](https://hackmd.io/_uploads/Sy62yFXin.png)

Knowing that the flag is unique, we can deduce that the two input ends must be `1 0` or `0 1`.

<br>

However, a fake setup is placed in this section, making the left input end `0`.

![](https://hackmd.io/_uploads/B1dhXtXo2.png)

<br>

Also, connecting this setup with an input of `0` will block the other circuit.

![](https://hackmd.io/_uploads/Byg-HYQjh.png)

### Tips for the left side of the setup

If you're stuck, you can search for Minecraft encoder/decoder.

## Step.3
When the final redstone lamp lights up, the input to the setup will be the flag.
`LoTuX{input}`

## Answer Map File
This map file contains the solution, with annotations at each input point.

https://drive.google.com/file/d/14HATd-pTv2Ec8O6E8K4nLZVbCub714qc/view?usp=sharing




{%hackmd M1bgOPoiQbmM0JRHWaYA1g %}
