---
id: 5900f43a1000cf542c50ff4d
title: 'Problem 206: Concealed Square'
challengeType: 5
forumTopicId: 301847
dashedName: problem-206-concealed-square
---

# --description--

Find the unique positive integer whose square has the form 1_2_3_4_5_6_7_8_9_0, where each "_" is a single digit.

# --hints--

`concealedSquare()` should return `1389019170`.

```js
assert.strictEqual(concealedSquare(), 1389019170);
```

# --seed--

## --seed-contents--

```js
function concealedSquare() {

  return true;
}

concealedSquare();
```

# --solutions--

```js
// solution required
```