Logic Puzzles

Sudoku Generator

Generate printable Sudoku puzzles with six per page, multiple difficulty levels, and optional solutions.

Binary Puzzle Generator — Printable

Create printable binary logic puzzles (Takuzu/Binairo) with customisable grid sizes and difficulty levels.

Number Pyramid Generator

Create printable addition pyramid puzzles with adjustable rows, difficulty, and optional answer keys.

Number Chain Generator — Mental Maths

Print mental-maths number chains with custom difficulty, length and answer keys.

Logic Grid Puzzle Generator — Printable

Create custom logic grid puzzles with your own categories, items, and clues — print-ready PDFs in seconds.

Sudoku — 9x9 Easy

Standard 9x9 Sudoku with many given clues. Full solution included.

Sudoku — 9x9 Medium

Medium difficulty 9x9 Sudoku. Fewer clues, more deduction required.

Sudoku — 9x9 Hard

Hard 9x9 Sudoku requiring advanced techniques. Solution on reverse.

Binary Puzzle — Easy

Fill a grid with 0s and 1s following unique rules. Easy 6x6 grids.

Binary Puzzle — Medium

Medium binary puzzles on 8x8 and 10x10 grids.

Binary Puzzle — Hard

Hard binary puzzles on 12x12 and 14x14 grids.

Sudoku — 9x9 Expert

Free printable expert-level 9×9 Sudoku — minimal clues (17–23) for advanced solvers.

Number Pyramid — Small

Add two adjacent numbers to find the number above. 4-5 row pyramids.

Number Pyramid — Large

Six to eight row number pyramids requiring multi-step addition.

Logic Grid Puzzle — Easy

Deduction puzzles where clues help match items across categories. 3x3 grids.

Logic Grid Puzzle — Hard

Complex logic grid puzzles with 4-5 categories and 20+ clues.

Number Chain Puzzle

Connect numbers in sequence following arithmetic rules through a grid.

Sudoku — 4x4 Easy

Simple 4x4 Sudoku for beginners and young children. Generates unique puzzles each time.

Sudoku — 6x6 Medium

Six-by-six Sudoku grid. Ideal for children learning Sudoku before the full 9x9.

Killer Sudoku

Sudoku variant where cages must sum to given totals. Generates unique puzzles.

KenKen — 4x4

Four-by-four KenKen arithmetic puzzles. Operations include addition and subtraction.

KenKen — 6x6

Six-by-six KenKen with all four arithmetic operations.

Kakuro Puzzle

Cross-sum number puzzle where digits in groups must add to clues.

Nonogram / Picross — 5x5

Simple nonogram pixel art puzzles. Reveals a picture when solved.

Nonogram / Picross — 10x10

Print 10×10 Nonogram puzzles with recognisable pictures — hearts, cats, sailboats and more.

Nonogram / Picross — 15x15

Large nonogram puzzles for experienced solvers. Detailed pixel images.

Maths Operations Chain

Follow a chain of operations to find the final answer. Multi-step.

Magic Square — 3x3

Complete the 3x3 grid so all rows, columns, and diagonals sum equally.

Magic Square — 4x4

Harder 4x4 magic squares with larger number ranges.

Arrow Sudoku

Sudoku variant where digits along arrows must sum to the circle digit.

Thermo Sudoku

Digits along thermometer shapes must increase from bulb to tip.

Diagonal Sudoku

Standard Sudoku with the added constraint that diagonals must contain 1-9.

Futoshiki Puzzle

Fill a grid with digits 1-N where inequality signs constrain adjacent cells.

Skyscrapers Puzzle

Place buildings of different heights so clue numbers match visible buildings.

Number Search Puzzle

Find hidden numbers in a grid of digits. Configurable number length.

Sequence Puzzle

Continue number and shape sequences. Simple to algebraic nth-term level.

Brain Teaser Worksheet

Collection of classic and original brain teasers. Varying difficulty.

Lateral Thinking Questions

Situation puzzles and lateral thinking scenarios for group discussion.

Pattern Recognition Worksheet

Visual pattern completion and odd-one-out activities.

Deduction Puzzle — Who Did It?

Clue-based deduction puzzles in story format. Multiple suspects.

Hitori Puzzle

Shade cells so no number appears twice in any row or column.

Irregular Sudoku

Sudoku with irregular shaped regions instead of standard 3x3 boxes.

Masyu Puzzle

Draw a loop through black and white circles following specific rules.

Slitherlink Puzzle

Draw a single closed loop along grid lines using number clues.

Samurai Sudoku

Five overlapping 9x9 Sudoku grids sharing corner regions.

Star Number Puzzle

Place numbers in a star grid so lines sum to the same total.

Mind Stretcher Puzzle Pack

Mixed pack of 4 different puzzle types on one sheet. Great for gifted learners.

Calcudoku Puzzle

Latin-square number puzzles with arithmetic cages.

Hashi (Bridges) Puzzle

Connect the numbered islands with bridges.

Hidato / Numbrix Puzzle

Join the numbers into one continuous path.

Light Up (Akari) Puzzle

Place bulbs to light every cell — a classic logic puzzle.

Numberlink / Flow Puzzle

Connect matching numbers with paths that fill the grid.

Shikaku Puzzle

Divide the grid into rectangles that match their number.

Solitaire Battleships Puzzle

Find the hidden fleet from the row and column clues.

Star Battle Puzzle

Place stars so every row, column and region holds exactly one.

Suguru (Tectonic) Puzzle

Fill the cages so equal numbers never touch.

Tents and Trees Puzzle

Pitch one tent beside every tree using the row and column clues.