Use your hunch.

13 min for all 5, or just one.

• RuleName the hidden rule in the fewest tests.→
• NinetyGive five ranges you are 90% sure of.→
• PeaksName the unlabelled curve in four guesses.→
• RoundtripShortest loop home, and one leg is shut.→
• ErrandsOrder eight errands to get home soonest.→

How this works · Earlier days