Reroll

Five dice and a goal. Pick which dice to hold before one reroll. As many as you can in 60 seconds, each one scored the moment you answer.

How it works

1. Each round deals five dice and a goal. Tap the dice to hold; the rest get rerolled once.
2. The best hold scores 10. Within 5% of the best scores 5, within 15% 2.
3. Rounds get harder as you improve: goals where “keep the high dice” is the wrong move.
4. “Most common face” means the face you have most of; if two tie, the higher one counts.

It trains expected value of a decision. After every round you see the best answer and why.

Play reroll

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 Higher or lower, or the probability puzzles.