Use every physical digit card once to build numbers that satisfy all the clues.
- Read the mission and the complete clue list.
- Drag cards into named places. With a keyboard, focus a card, press Space or Enter, use Left or Right, then press Space or Enter to drop it.
- Choose Check to inspect every constraint without seeing a solution.
- Submit a valid number, then complete the mission by finding another, proving an extreme, finding all, or classifying the claim.
- Hint directs your attention without giving a digit. Reveal is available after a Check and ends the independent attempt.
Clear empties the current placement. Reset restarts the same puzzle. New puzzle keeps your level and mission.
