Workshop › Klondike Solitaire › Step 23 of 40

Find where a card goes

What we are doing

The quickest way to play is to tap a card and let the game find where it goes. autoMove tries the foundations first (almost always the best move), then the columns, and stops at the first move that works.

```js
// A tap sends a card to the best place it can go: a foundation first, then a tableau column.
function autoMove(from, index) {
  const targets = ['f0', 'f1', 'f2', 'f3', 't0', 't1', 't2', 't3', 't4', 't5', 't6']
  return targets.some((to) => tryMove(from, index, to))
}
```

What it means

• targets lists the piles to try, in order.
• some calls the function for each item and stops at the first true; it returns whether any was true. Because tryMove really moves the card, the card goes to the first place that fits and no further.

Your turn

Above the hit comment line, write autoMove with its comment, leaving an empty line after it.

Skills: Arrays and objects, Functions

← Turn over the uncovered card Pick up a card →

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