Griductive

Mark every suspect criminal or innocent from clues that are always true, one provable verdict at a time.

Every day: One grid of suspects per day: mark each person criminal or innocent by pure logic from the clues; every correct call reveals that person's statement. New puzzle: Daily.

Play Griductive on knotwise.games

Play Griductive on Knotwise Games

Griductive tutorial showing suspect cards, a clue 'No criminals in column C' and a flipped card revealing a new clue

Griductive is a daily grid-deduction puzzle from Knotwise Games. Everyone on the grid is secretly a criminal or an innocent, exactly one line-up fits all the statements, and you uncover it one verdict at a time; the game will not accept a verdict you have not proved.

About Griductive

Griductive was designed by Shawn Liu, founder of Knotwise Games, which also makes the daily puzzles Alibi, Tilerdle and Solitile. Its old address, griductive.com, now redirects to the game's page on knotwise.games.

Each day's grid holds a set of people, each with a name and a job. Every one of them is secretly either a criminal or an innocent, and exactly one arrangement is consistent with all the clues. Clues are always true: a statement such as 'No criminals in column C' proves everyone in that column innocent. When you make a correct call, the card flips and reveals that person's own clue, which becomes your next lead.

What sets it apart is that guessing is impossible: the board will not accept a verdict you have not earned. Every grid always has at least one verdict that is already forced, so the trick is to sweep the board for it rather than stare at one person. A timer runs while you play, and there are extra puzzle packs beyond the daily.

It suits fans of logic grid puzzles and of Clues by Sam style deduction games.

How to play Griductive

  1. Read the clues already showing on the board.
  2. Find a person whose status is forced by the clues and mark them criminal or innocent.
  3. A correct call flips the card and reveals a new clue.
  4. Keep going until every suspect has a verdict.

Tips

  • Sweep the whole board for a forced verdict instead of focusing on one interesting person.
  • Start from the narrowest clue: one that names few people constrains the most.
  • After every flip, reread all clues; new information can unlock old ones.
  • Tap a solved clue to highlight the people it counts.

Questions

Is the puzzle the same for everyone?

It is a daily puzzle with one grid per day.

Can I guess?

No. The board does not accept a verdict that the clues have not proved.

Who makes it?

Knotwise Games, with puzzles designed by Shawn Liu.

Is it free?

Yes, in the browser.

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