Test your probability intuition by identifying mispriced odds on dice, cards, and coin events. Maximize your skill score through smart decision-making and optimal bet sizing.
Probability Betting tests your ability to recognize fair odds and manage bankroll using the Kelly Criterion. Each round presents betting opportunities on dice rolls, card draws, and coin flips. Some odds are fair, others are mispriced - spot the edge, size your bets optimally, and outperform other players with superior probability assessment.
All players see the same events with quoted odds. Select which events to bet on and set your bet amounts. The timer counts down - submit before it expires! In single player mode, practice at your own pace.
Outcomes are shown: dice rolls, card draws, coin flips. See which of your bets won or lost and watch your balance change. A quick display before moving to the next round.
After all rounds, the skill score breakdown is revealed. See your decision quality (did you bet on opportunities and skip bad bets?), sizing efficiency (Kelly analysis), and any arbitrage bonuses earned.
Detailed round-by-round analysis. For each event, see the fair odds vs given odds, your edge %, Kelly optimal bet size, and how your actual bet compared. Compare your bets with all other players.
Probability Betting
1-20 players | ~10 min