Demo: spell THE FOUR OF DIAMONDS face-up into piles 3·4·2·8 (THE / value / OF / suit) — the last card of the suit pile is the real 4♦ (position 17, a genuine hit). Then tap the card they named.
Value
Suit
Learn My Stack
ACAAN Crib
Enter the number the spectator names — see which cards can be at that position, and the suit each must be.