Alibi Daily Logic Grid

Alibi Daily Logic Grid is a classic zebra or Einstein-style elimination puzzle with a murder-mystery frame. Each case file, numbered like Case File No. 87, pins four suspects, four rooms, four weapons and four times of the evening. On the left is The Evidence, a list of about a dozen clues such as 'The coroner fixes the murder at 10 PM' or 'Lady Vane was in the Study'. Below is The Cross-Reference, a set of grids pairing time with who, where and what.

You work it like a paper grid. Tapping a cell cycles it through blank, a dash and an X, and confirming a pairing automatically crosses out the rest of its row and column, so the pencil-work is done for you. You cross out what the clues forbid until each row and column has one survivor. When the board is complete you close the case, and the culprit is the suspect matching the coroner's time of death.

Each clue set is complete and consistent, so plain elimination always reaches the one answer, with no guessing. Getting it right without a wrong mark counts as a clean solve; each wrong mark is counted. The case resets at midnight and is the same board for everyone in the world. The app keeps your streak, best streak and clean-solve rate, gives you a spoiler-free share card, and opens a practice bench with unlimited fresh cases once the daily is closed.

The app is made by Jordan Wegner and came out on the App Store in July 2026, with version 1.3 on 30 September 2026. Closed cases also move you up a ladder of detective ranks, from Detective to Inspector and on. It is entirely offline and collects nothing. It suits players who enjoy logic-grid books and murder-mystery puzzles like Murdle.