Today's progress0 / 7,000
RULE
Discover the hidden rule.
GoalWork out the hidden rule.
PlayStudy the examples, then classify all four proof items. Testing examples is optional.
Score1,000 points = no tests + a perfect proof. Each test costs 100; each proof mistake costs 180.
Daily puzzle
RULE
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About this daily game
How to play RULE
Work out the single rule that separates the fitting examples from the non-fitting examples, then prove you understand it.
- Study the examples marked Fits and Does not fit.
- Use up to two optional tests if you need more evidence. Each test costs points.
- When you are confident, classify every proof example.
- Lock your proof. The puzzle then moves permanently into review mode for the day.
Scoring
- Start with 1,000 points.
- Each optional test costs 100 points.
- Each incorrect proof classification costs 180 points.
- Your score is frozen once you submit the proof.
A new daily set arrives at midnight UK time. Your current game is playable above; the instructions below do not reveal today's answer.