---
id: 5900f4131000cf542c50ff25
challengeType: 5
title: 'Problem 166: Criss Cross'
---
## Description
A 4x4 grid is filled with digits d, 0 ≤ d ≤ 9.
It can be seen that in the grid
6 3 3 0
5 0 4 3
0 7 1 4
1 2 4 5
the sum of each row and each column has the value 12. Moreover the sum of each diagonal is also 12.
In how many ways can you fill a 4x4 grid with the digits d, 0 ≤ d ≤ 9 so that each row, each column, and both diagonals have the same sum?
## Instructions
## Tests
```yml
tests:
- text: euler166() should return 7130034.
testString: assert.strictEqual(euler166(), 7130034, 'euler166() should return 7130034.');
```
## Challenge Seed
```js
function euler166() {
// Good luck!
return true;
}
euler166();
```