Higher or lower

A card is face up and some are gone. Call the next card from what's left in the deck. As many as you can in 60 seconds, each one scored the moment you answer.

How it works

1. One card is face up; the cards on the table are gone from the deck. Call the next card: surely or probably, higher or lower.
2. “Surely” means a better than 70% chance. Aces are high; the same rank loses.
3. The better side in the right band scores 10, the better side in the wrong band 0. The wrong side costs 3.

It trains judging calls by their odds, and counting cards. After every round you see the best answer and why.

Play higher or lower

Play with friends or a club

Challenge a friend with a duel link, or run a tournament for a club or class: one link, the same rounds for everyone, one run each, and a live leaderboard.

Also try Which bag?, or the probability puzzles.