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Free Printable Logic Puzzles & Code-Breakers

Puzzles for people who like to work things out. No trivia, no vocabulary tests — just clues, rules and pure deduction. Ten logic grids from a beginner’s 3×3 up to three Hard 5×5s, eight sudoku in two levels, and five codes to crack, from a simple number key to a full substitution cipher. Every puzzle prints on a single page with a fold-over answer key.

Logic grids · sudoku · cryptograms · riddle code — 23 puzzles, Easy to Hard

Logic grids (10)
Easy

Podium Placements

Logic Grid

Three runners, three medals and three “did not” clues. The simplest size a logic grid can be — the perfect first one.

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Easy

The New Backpacks

Logic Grid

Three kids, three backpack colours. A gentle 3×3 built for the first week of school.

Print this puzzle » Back to School »
Easy

Puzzle Club Night

Logic Grid

Three friends at the library’s puzzle club, each working a different kind of puzzle. Three “not” clues and no guessing.

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Easy

The Movie Night

Logic Grid

Three friends pick three genres — but two of the clues are either/or statements, so the solve hinges on where they overlap.

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Medium

The Bake Sale

Logic Grid

Four neighbours, four treats, six clues — and every clue is needed. Take one away and the answer stops being unique.

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Medium

The First Day Schedule

Logic Grid

Four kids, four first-period subjects. One of them gets her class by pure elimination.

Print this puzzle » Back to School »
Medium

The Road Trip

Logic Grid

Four friends, four destinations. This one solves down a column before a row — good practice for reading a grid both ways.

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Hard

The Talent Show

Logic Grid

Five performers, five acts, ten clues — and one performer is never mentioned by name. Solved entirely by elimination.

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Hard

The Science Fair

Logic Grid

Five students, five projects. Built as a clean cascade: crack the first row and the rest fall one after another.

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Hard

The Laptop Lineup

Logic Grid

Five professionals, five laptop brands. Half the clues use jobs instead of names, and two are either/or — read carefully.

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Sudoku (8)
Easy

Easy Sudoku #4

Sudoku

The most generous grid in the set, with 45 numbers already filled in. The quickest solve of the eight.

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Easy

Easy Sudoku #1

Sudoku

43 givens and only one 3 among them — mostly solvable by simple scanning.

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Easy

Easy Sudoku #2

Sudoku

43 givens, with row 3 the sparsest line on the grid.

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Easy

Easy Sudoku #3

Sudoku

The leanest of the easy four at 42 givens — a good bridge to the hard set.

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Hard

Hard Sudoku #3

Sudoku

32 givens, a lone 4 and a row with just two numbers. Expect a slower, more deliberate solve.

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Hard

Hard Sudoku #1

Sudoku

28 givens. Scanning gets you halfway; then you’ll need a pointing pair to keep going.

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Hard

Hard Sudoku #2

Sudoku

28 givens, three rows starting with only two numbers each. A pointing pair, then a naked or hidden pair.

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Hard

Hard Sudoku #4

Sudoku

28 givens and a completely empty centre box, with only one number in the top row and one in the bottom.

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Codes & ciphers (5)
Easy

Guess the Author

Cryptogram

The quote is printed in full — it’s the name underneath that’s coded, with a simple A=1 to Z=26 key.

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Easy

Puzzle Saying

Cryptogram

A nine-word saying hidden behind a Caesar shift of 3. You’re told the shift, so just count back.

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Easy

Worth the Wait

Riddle Code

Solve six fall riddles, then copy each letter into every box with the same number until a hidden saying appears.

Print this puzzle » Seasons & Weather »
Medium

Science Cryptogram

Cryptogram

An astrophysics fact behind a deeper Caesar shift of 7 — the coded text looks far less like English.

Print this puzzle » Science, Space & Tech »
Medium

Something’s Brewing

Cryptogram

Our first true substitution cryptogram: a scrambled alphabet and no key. The hidden text is the witches’ spell from Macbeth.

Print this puzzle » Halloween »
PuzzleTypeLevelWhat’s inside
Podium PlacementsLogic GridEasy3×3 · 3 clues
The New BackpacksLogic GridEasy3×3 · 3 clues
Puzzle Club NightLogic GridEasy3×3 · 3 clues
The Movie NightLogic GridEasy3×3 · 3 clues · either/or
The Bake SaleLogic GridMedium4×4 · 6 clues
The First Day ScheduleLogic GridMedium4×4 · 6 clues
The Road TripLogic GridMedium4×4 · 6 clues
The Talent ShowLogic GridHard5×5 · 10 clues
The Science FairLogic GridHard5×5 · 10 clues
The Laptop LineupLogic GridHard5×5 · 8 clues · either/or
Easy Sudoku #4SudokuEasy45 givens
Easy Sudoku #1SudokuEasy43 givens
Easy Sudoku #2SudokuEasy43 givens
Easy Sudoku #3SudokuEasy42 givens
Hard Sudoku #3SudokuHard32 givens
Hard Sudoku #1SudokuHard28 givens
Hard Sudoku #2SudokuHard28 givens
Hard Sudoku #4SudokuHard28 givens
Guess the AuthorCryptogramEasyNumber code · key given
Puzzle SayingCryptogramEasyCaesar shift 3 · shift given
Worth the WaitRiddle CodeEasy6 riddles · type on screen
Science CryptogramCryptogramMediumCaesar shift 7 · shift given
Something’s BrewingCryptogramMediumSubstitution · no key · 15–30 min

Where to start

New to logic grids

  1. Podium Placements (No. 101). Three “did not” clues and nothing else. Mark an ✗ for each clue, and the last open square in each row is your answer.
  2. The Movie Night (No. 104). Still 3×3, but two clues are either/or statements. A good first taste of clues that don’t rule anything out on their own.
  3. The Bake Sale (No. 102) or The Road Trip (No. 105). The step up to 4×4.
  4. The Talent Show (No. 103), then The Laptop Lineup (No. 109). The Laptop Lineup is the trickiest of the three Hard grids, because half its clues name a job instead of a person.

Sudoku, easiest first

Start with Easy Sudoku #4 (45 givens), work down through the other easy grids, then try Hard Sudoku #3, which has a few more starting numbers than the other hard ones. Save Hard Sudoku #4, with its empty centre box, for last.

Codes, from decoding to code-breaking

The first three hand you the key; the last two make you find it. Guess the Author → Puzzle Saying → Worth the Wait → Science Cryptogram → Something’s Brewing.

Ways to use this pack

Solving and printing tips

The logic grids and sudoku can be solved on screen as well as printed, and so can the riddle code. On a logic grid, click a square to cycle through ✗ and ✓, then press Check when you think you have it. The four newest grids (The Laptop Lineup, The New Backpacks, The First Day Schedule and Puzzle Club Night) also cross off the rest of the row and column for you when you place a ✓.

On paper, use a pencil. A wrong guess in ink is the most common reason a logic grid or sudoku goes sideways, and none of these puzzles ever needs a guess.

Mr. Puzzle says: If you’re stuck, you haven’t run out of logic, you’ve just missed a clue. Read every clue again from the top before you reach for the answer key.