Daily Triplets

Modelled on Wason's 2-4-6 task, each puzzle hides a rule about sequences of three numbers. The player proposes triplets and learns whether each one fits the rule or not, gradually narrowing down the pattern behind the numbers. A new rule is set every day, and puzzles are numbered in sequence.

Category

Math, Logic

How you play

Deduction

Languages

Any (no reading needed)

Daily puzzle

Yes

• 7.9
  Pips

  Place dominoes to satisfy region conditions
  Play
• 7.3
  Sudoku.com

  Solve sudoku grids from easy to expert
  Play
• 7.2
  Sudoku

  Fill a 9x9 grid so no digit repeats
  Play
• 7.0
  Sumplete

  Delete numbers until rows hit their sums
  Play
• 6.8
  Knotilus

  Split ten numbers into three linked sequences
  Play
• 6.6
  Cagey

  Fill number cages to hit arithmetic targets
  Play
• 6.1
  CancelWise

  Cancel cells until rows and columns hit targets
  Play
• 4.4
  Numle

  Guess a five-digit number in six tries
  Play