pxt-calliope/docs/reference/js/lessons/minesweeper/quiz-answers.md

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# minesweeper quiz answers
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make a game to test your memory for placing a LED mine then finding the hidden LED mine.
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## Name
## Directions
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Use this activity document to guide your work in the [minesweeper tutorial](/lessons/minesweeper/tutorial).
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Answer the questions while completing the tutorial. Pay attention to the dialogues!
## 1. Write the code that randomly generates a number between 0 and 4 and stores that value in a global variable called 'mine x'.
<br />
```
mineX = Math.random(5)
```
## 2. Write the code to plot the point with coordinates of (select x, select y) as shown. Your code should apply the concept of `led->plot ( , )`
![](/static/mb/lessons/blink-1.png)
<br />
```
selectX = 0
selectY = 0
led.plot(selectX, selectY)
```
## 3. Write the code to plot the point with coordinates of (select x, select y) as shown. Your code should apply the concept of `led->plot ( , )`
![](/static/mb/lessons/blink-0.png)
<br />
```
selectX = 2
selectY = 2
led.plot(selectX, selectY)
```
## 4. How do you check if a dot is one away from given x and y coordinates?
<br />
<br />
```
if (mineX + 2 > selectX && selectX > mineX - 2 && mineY + 2 > selectY && selectY > mineY - 2) {
}
```