Workshop › Klondike Solitaire › Step 22 of 40

Turn over the uncovered card

What we are doing

When the last face-up card leaves a column, the face-down card under it is uncovered and turns face up.

```js
const exposed = last(piles[from])
if (from[0] === 't' && exposed) exposed.up = true
```

What it means

• exposed is the card now on top of the source pile (or undefined if it is empty).
• Only in a column, and only if there is such a card, turn it face up.

Your turn

In tryMove, between the push line and return true, write the two lines.

Skills: Game states

← Move cards by the rules Find where a card goes →

All steps

1. The green table
2. Draw one card
3. The face of a card
4. Red and black
5. A deck of 52
6. Shuffle
7. Piles in one object
8. Deal the seven columns
9. A place for every pile
10. Put the piles on the table
11. Fan out the columns
12. Outlines for empty places
13. Turn over a card
14. Space turns a card
15. Go through the stock again
16. What is under the pointer?
17. Hitting a card in a column
18. Tap the stock
19. Rule 1: building a column
20. Rule 2: building a foundation
21. Move cards by the rules
22. Turn over the uncovered card
23. Find where a card goes
24. Pick up a card
25. Tap to move
26. A move counter
27. Count the moves
28. Where did you grab it?
29. Follow the pointer
30. Draw the held cards at the pointer
31. Drop it where you want
32. Drop a king into an empty column
33. A clock
34. Winning
35. You won!
36. A new game
37. The best time
38. Snapshots of the table
39. Undo
40. Build it yourself: finish by itself