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CRIDOKU

Daily case

The University

19 August 2026 · 7×7 · ●●○○ hard

One fresh case a day — not from the book but made for this page and held to the same standard: exactly one solution, solvable without guessing.

MicroscopeArmchairCrateBookshelfBlackboardClockSkeletonFaculty RoomSeminar RoomLaboratoryCourtyardLecture HallArchive1A2B3C4D5E6F7GN ▲

Suspects

  • Leo
  • Ines
  • Clara
  • Paul
  • Karla
  • Jonas
  • ✕
    Greta

Clues

  1. 1Karla was in the archive.
  2. 2Jonas was in the courtyard.
  3. 3Clara was in the lecture hall.
  4. 4Leo was further north than Ines.
  5. 5Leo stood next to the blackboard.
  6. 6Ines stood next to the bookshelf.
  7. 7Karla was further north than Jonas.
  8. 8Clara was further west than Paul.

Who did it?

How you get there

The rules in four sentences

  1. 1Every person stands alone in their row and alone in their column.
  2. 2Solid objects fill their square — nobody stands there (hatched).
  3. 3On the rug, armchair, chair, bed, ladder and tractor somebody can stand.
  4. 4The culprit is whoever ends up in the same room as the victim.

Missed one?

The last seven cases stay up.