Logic puzzles and brain teasers

Puzzles that reward careful reasoning rather than fast fingers: fill grids from clues, crack hidden codes and work out the answer step by step.

Puzzles with progress save automatically, so you can stop halfway and pick up where you left off.

32 free logic puzzles

  • Balance Puzzle – Read the balanced scales, then work out how many shapes balance the last one.
  • Ball Sort – Move balls between tubes until every tube holds a single colour.
  • Binary Puzzle – Fill the grid with 0s and 1s — no three in a row, balanced lines, no repeats.
  • Bulls and Cows – Crack a secret number using bulls (right place) and cows (wrong place).
  • Code Breaker – Crack the safe: each digit tells you higher, lower or correct.
  • Connect the Dots – Draw one line through every square, passing the numbered dots in order.
  • Cryptogram – Crack a secret code to reveal a famous saying.
  • Flow Connect – Join every pair of matching dots with pipes that never cross — and fill the whole board.
  • FreeCell – The thinking player’s solitaire — every card is face up.
  • Guess the Number – Find the secret number using “higher” and “lower” clues.
  • Guess the Word – Deduce a secret word from how many letters each guess shares with it.
  • Kakuro – A number crossword: fill each run so it adds up to its clue, without repeating a digit.
  • Lights Out – Every press flips a light and its neighbours. Can you switch the whole grid off?
  • Logic Deduction – Syllogisms, orderings and truth-teller puzzles: what must be true?
  • Logic Grid – Use the clues to work out who owns what — an Einstein-style deduction puzzle.
  • Matchstick Puzzle – The equation is wrong — move exactly one matchstick to make it true.
  • Math Puzzle – Missing numbers and missing operators: complete each equation.
  • Minesweeper – Clear the board using number clues without detonating a mine.
  • Nonogram – Use the number clues to fill in the grid and reveal a hidden picture.
  • Number Sequence – Find the next number in each sequence.
  • Parking Puzzle – Clear the jammed car park — each car only drives forwards, so pick the right order.
  • Pattern Puzzle – Slide rows and columns of tiles until your grid matches the target mosaic.
  • Pattern Recognition – Spot the pattern: what comes next, which one doesn’t belong, what’s missing.
  • Pipe Connect – Rotate the pipe tiles until water from the centre reaches every tile without a leak.
  • Sea Battle – Hunt down the hidden enemy fleet before it finds yours.
  • Secret Colors – Deduce the hidden colour code from black and white feedback pins.
  • Sliding Puzzle – Slide the numbered tiles back into order — the classic 8, 15 and 24 puzzles.
  • Sokoban – Push every crate onto a storage spot — you can push, but never pull.
  • Sudoku – Fill the grid so every row, column and box holds the digits 1 to 9.
  • Tower of Hanoi – Move the tower of discs to the right peg, one disc at a time, never larger on smaller.
  • Unblock Puzzle – Slide the wooden blocks out of the way to free the red block through the exit.
  • Word Ladder – Change one letter at a time to climb from one word to another.

Frequently asked questions

Do these puzzles have a unique solution?

Generated Sudoku puzzles are checked to have exactly one solution, and level-based puzzles such as Sokoban and Unblock are verified solvable before they ship.

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