https://github.com/zaryab2000/decipher_evm_puzzles
A collection of EVM opcodes puzzles that helps you learn in-depth details about EVM Opcodes by solving them. Featured in Week In Ethereum News 🌟
https://github.com/zaryab2000/decipher_evm_puzzles
Last synced: 8 months ago
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A collection of EVM opcodes puzzles that helps you learn in-depth details about EVM Opcodes by solving them. Featured in Week In Ethereum News 🌟
- Host: GitHub
- URL: https://github.com/zaryab2000/decipher_evm_puzzles
- Owner: zaryab2000
- Created: 2023-03-05T15:43:18.000Z (over 3 years ago)
- Default Branch: main
- Last Pushed: 2023-10-09T19:48:25.000Z (over 2 years ago)
- Last Synced: 2025-10-04T19:32:05.721Z (9 months ago)
- Language: JavaScript
- Homepage: https://www.zaryabs.com/
- Size: 95.7 KB
- Stars: 48
- Watchers: 1
- Forks: 4
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# decipher_EVM_puzzles
> **[ 🌟 Featured in Week In Ethereum News-April 2023](https://weekinethereumnews.com/week-in-ethereum-news-april-1-2023/)**
Decipher EVM puzzles are basically a collection of EVM opcodes puzzles that includes a bunch of different opcodes which can be executed successfully only if you provide the right inputs.
The Decipher EVM Puzzle game is an extended version of [Franco's EVM puzzles](https://github.com/fvictorio/evm-puzzles) but with *additional complexity, a difficulty-level selector making it available not just for senior devs but also beginners, and more interesting puzzles covering a wide range of opcodes*.
Every puzzle might require one of the following as input from the player:
* CallData only
* CallValue only
* Both CallData & CallValue
Your main goal as a player is to provide the right set of inputs so that the transaction doesn't get reverted.
>If it reverts, you FAIL...❌ If it executes successfully, You SOLVED that particular puzzle. ✅
### Imperative Note
* Solutions to puzzles can have more a formulae instead of one specific value.
* For instance, some puzzles may require a type of input where **Calldata size must be n** and **CallValue must be n+4**,in order for you to solve it correctly.
* For such cases, correct **CallData Size can be 4 or 5 or 6 and CallValue can be 8 or 9 or 10 respectively**
* It's imperative to understand the formulae rather than chasing 1 specific calldata size or callvalue as the right answer, for such a puzzle
* Solutions to the same puzzle can also be more than 1 specific input.
## How to Play?
1. Clone this repository
```
git clone https://github.com/zaryab2000/decipher_EVM_Puzzles.git
```
2. Install Packages
```
npm install
```
3. Run the following command
```
npx hardhat play
```
That's it.
Once done, you should be prompted to do this 👇
Then, simply select the difficulty level and start playing.
## Tools that can help
While you can approach the game however you wish, I would like to recommend two tools that will undoubtedly make your life easier.
1. [Evm Codes Playground](https://www.evm.codes/playground?fork=merge)
2. [ETHERVM's list of Opcodes](https://ethervm.io/)
*More details [here](https://zaryabs.com/decipher-evm-puzzle-game-for-smart-contract-devs)*