---
id: 5900f3881000cf542c50fe9b
challengeType: 5
title: 'Problem 28: Number spiral diagonals'
videoUrl: ''
localeTitle: ''
---

## Description
undefined

## Instructions
undefined

## Tests
<section id='tests'>

```yml
tests:
  - text: ''
    testString: 'assert(spiralDiagonals(101) == 692101, "<code>spiralDiagonals(101)</code> should return 692101.");'
  - text: ''
    testString: 'assert(spiralDiagonals(303) == 18591725, "<code>spiralDiagonals(303)</code> should return 18591725.");'
  - text: ''
    testString: 'assert(spiralDiagonals(505) == 85986601, "<code>spiralDiagonals(505)</code> should return 85986601.");'
  - text: ''
    testString: 'assert(spiralDiagonals(1001) == 669171001, "<code>spiralDiagonals(1001)</code> should return 669171001.");'

```

</section>

## Challenge Seed
<section id='challengeSeed'>

<div id='js-seed'>

```js
function spiralDiagonals(n) {
  // Good luck!
  return n;
}

spiralDiagonals(1001);

```

</div>



</section>

## Solution
<section id='solution'>

```js
// solution required
```
</section>