To search your Tasks Checklist:
1. Open the Tasks Checklist
2. Click the search bar at the top of the board
3. Type the search request, results appear in a dropdown as you type
4. Pick a result: click it, or move to it with the arrow keys and press Enter to open the card
5. To clear the search, click the X at the right end of the bar or press Esc

Keyboard Shortcuts
You can run a whole search without the mouse, using the keys shown in the dropdown's hint bar.
- Up / Down arrows: move the highlight up or down the results
- Enter: open the highlighted card
- Esc: close the results dropdown