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docs/reference/js/lessons/guess-the-number/challenges.md

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+# guess the number challenges
+
+Coding challenges for the guess the number tutorial. #docs
+
+## Before we get started
+
+Complete the following guided tutorial:
+
+* [tutorial](/microbit/lessons/guess-the-number/tutorial)
+
+At the end of the tutorial, click `keep editing`. Your code should look like this:
+
+```
+input.onButtonPressed("A", () => {
+    let x = Math.random(10)
+    basic.showNumber(x, 150)
+})
+```
+
+### Challenge 1
+
+### @video td/videos/guess-the-number-2
+
+When button `B` is pressed, we want to clear the screen. This will make it so users can play your game over and over again! Add an event handler to handle this case.
+
+```
+input.onButtonPressed("A", () => {
+    let x1 = Math.random(10)
+    basic.showNumber(x1, 150)
+})
+input.onButtonPressed("B", () => {
+    basic.clearScreen() // ***
+})
+```
+
+### Challenge 2
+
+Show an animation when you clear the screen! Choose what animation makes most sense to you. Be creative!
+