**fiveoutofnine** is the first **100% on-chain** chess engine, where minters **play against the smart contract**. Each move is minted as an NFT, and accompanied by a generative art piece. The majority of the project's development and beauty is in its [**algorithms and code that enable**](https://fiveoutofnine.com/contract) such complex computing, so the art highlights its design and implementation.

fiveoutofnine

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**Player** plays **`f4` king** to **`e5`**.

```
6      
5      
4      *
3      
2      
1      
  a b c d e f
```

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**fiveoutofnine** responds with **`b2` rook** to **`e2`**.

```
6      
5      
4      
3      
2  *    
1      
  a b c d e f
```