Free daily logic puzzles

Two kinds of logic puzzle

Twenty-four logic puzzles with one new board apiece every day, a daily jigsaw among them. Pencil-and-paper classics (a nonogram, a slitherlink loop, shikaku rectangles, a balanced dots-and-rings grid, a light-every-square puzzle, a shape-fitting puzzle, a route you eat in order, a sliding block puzzle in three sizes) alongside deduction puzzles built around suspects, liars, hidden rules and results tables. Every board has exactly one solution and can be reached without a guess.

The grid puzzles are the ones you may know from puzzle books. Etch is a nonogram: fill the squares the row and column counts force and a picture appears. Hedge is slitherlink: draw one closed loop so every number has that many sides on it. Plot is shikaku: cut the board into rectangles so each number owns exactly its own. Duet is a binary grid: dots and rings, half and half in every row, column and walled room, never three alike in a line. Lamps is the light-up puzzle: place lamps until every square is lit, with no lamp shining on another. Snug is the shape-fitting puzzle: a board with a few squares missing and pieces that cover it exactly one way, turned and flipped as you need. Parker is the sliding block puzzle where you get the red one out, and Impound and Junkyard are the same puzzle on bigger lots.

The deduction puzzles give you statements instead of a grid. Alibi narrows four suspects to one across three boards. Sworn has five sworn statements with an exact number of lies. Hearsay works out what two people can and cannot know. Docket and Suffice are the reasoning sections of two well-known standardized tests, one setup and five questions, or two statements and a verdict on whether they settle it.

Where to start

Etch or Plot if you like a grid. Alibi if you like a whodunit. Axiom if you want something nobody else has: one hidden rule and a handful of tests to tell five candidate rules apart.