**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

---

**Player** plays **`f4` king** to **`e3`**.

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

---

**fiveoutofnine** responds with **`c2` rook** to **`b2`**.

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