Numbun

A Bulls and Cows code-breaker: the secret number has unique digits, and each guess returns plus and minus clues for digits in the right or wrong position. The daily puzzle uses four digits and ten tries, a daily case supplies five given guesses, and free play allows two to nine digits.

Category

Logic, Math

How you play

Deduction

Languages

Any (no reading needed)

Daily puzzle

Yes

Unlimited mode

Yes

Archive

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
  Mini Sudoku

  Fill a 6x6 grid with digits 1 to 6
  Play
• 6.8C
  Cracked Sudoku

  Solve a Sudoku variant drawn without a grid
  Play
• 6.7
  One Up Puzzle

  Fill a walled grid with numbered sequences
  Play
• 6.6
  Buzzled

  Colour hexagons so each row hits its target sum
  Play
• 6.6
  Fivefold

  Fill a number grid under rules that change daily
  Play