How to Play Griductive
Griductive is a daily grid-deduction puzzle. A grid of suspects, each secretly criminal or innocent — and every clue their cards reveal is true, with exactly one set of verdicts that fits all of them. Judge a suspect correctly and their card flips to reveal a new statement, cracking the case open one deduction at a time.
Controls
- Tap a suspect to call them criminal or innocent.
- Tap a solved card to spotlight its clue — it lifts up and color-codes the people it names; press & hold it to dismiss a clue you're done with.
- Mark pencils colored notes; Hint spotlights the next step.
The setup
Every person on the grid is secretly criminal or innocent, and exactly one arrangement satisfies every clue. A few people start already identified — your foothold into the grid.
Grids grow across the week: a gentle Monday case up through the knottier weekend ones. A new case opens daily at midnight Eastern Time.
1. Make a call
Tap an unidentified suspect and choose criminal or innocent. Call it right and the card flips to reveal that person's statement; call it wrong and you lose a life. Only call what the clues actually prove.
2. Read the statements
Every flipped card carries a statement — your evidence. Tap a solved card to select it: it lifts to the front with a badge, the rest of the board dims, and its words color-codeexactly who it counts. Color only shows on the card you've selected, so a hue always means “look here”.
- who the clue is measured from
- the people it counts
- a specific person or spot it names
3. Mark & Hint
Mark lets you pencil a colored note on any suspect without committing — tap a card to cycle its color: red for a criminal hunch, green for innocent, then three neutral hues for grouping. Stuck? Hint works in steps: first it rings the statement(s) you need, then it points at the very person you can identify next.
Clue wording
A handful of words in the clues carry an exact meaning. When one trips you up, here's the ruling.
- Rows & columns
- Rows run across and count from the top (1, 2, 3…); columns run down and are lettered from the left (A, B, C…). A spot like C2 means column C, row 2.
- Neighbors
- Everyone a person touches, diagonals included — up to eight in the middle of the grid, fewer along an edge or in a corner.
- Corners & edges
- The corners are the four cells where two sides meet; the edges are the whole outer ring that frames the grid — the corners count as edges too.
- Above / below / left / right of someone
- Anywhere further along that person's own column (above or below) or row (left or right), on that side — not necessarily touching them, and never counting them.
- Directly above / below / left / right
- Only the single card that touches that person in that direction.
- In between two people
- The people on the straight line between the two named people — the pair themselves don't count.
- Connected
- A run of people linked edge to edge — up, down or sideways, never through a diagonal. One person alone already counts as connected.
- Spaces apart
- How far apart the counted people sit along the line, in steps — next-door is 1, a single gap makes 2.
- Neighbors in common
- Cards that neighbor both people at once. Neither of the two people counts as their own common neighbor.
- No / exactly N
- An exact tally — “no” means zero. Treat every number as exact unless the clue says at least, more or fewer.
- At least N
- That many or more.
- Both
- Exactly two.
- Even & odd
- Even is 0, 2, 4, 6… — and yes, zero is even. Odd is 1, 3, 5, 7…
- The most / the only
- Both mean strictly unique. “The most” has to beat every other person or group outright — no ties. “The only” means exactly one fits, with no other anywhere on the grid.
- More / fewer than
- A plain comparison. It promises nothing about the smaller side — that side can even hold none.
- In total
- The combined count across everything the clue names — the whole grid, or two named groups taken together — not each group on its own.
Good to know
- Every statement is true. A card only turns over once you've judged it correctly, and whatever it then says always holds — criminals tell the truth here as well.
- A profession is just a job. A cook is no more or less suspect than a guard. Only a clue can link a job to guilt or innocence.
- You never have to guess. At any point, at least one person's verdict already follows from the clues. If nothing looks forced, a word is being read too loosely — or a card you've flipped still has more to give. It is never a fifty-fifty.
- Names run alphabetically. People are seated in alphabetical order by name, left to right and top to bottom — handy for spotting who a clue points at.
Crack the case
Identify everyone correctly and the case is solved. Every grid has exactly one consistent set of verdicts, so any line of reasoning that never contradicts a clue gets you there.
Turn on Relaxed mode (members) to explore without losing lives, and members can peek at the answer any time from this menu.