Challenge
your mind.
A curated collection of logic puzzles designed to sharpen your thinking. Pick a puzzle and start solving.
Pick your challenge
Each puzzle type offers easy, medium, and hard difficulties.
Choose a Puzzle
Sudoku
Fill the 9×9 grid so every row, column and 3×3 box contains 1-9.
Nonogram
Discover the hidden picture by painting cells according to the row and column clues.
Binairo
Fill the grid with 0s and 1s, with no more than two adjacent identical numbers.
Jigsaw
Piece the image back together. Upload custom photos and choose between 12 to 512 pieces.
Aquarium
Fill regions with water to match the row and column amounts.
Kakuro
A mathematical crossword. Fill cells with digits 1-9 so they sum to clues.
Futoshiki
A logic puzzle with inequalities. Fill the grid with numbers 1-N.
Mathler
Find the hidden math equation that equals the target number.
Pair Down
Remove letters from words to build new ones and uncover a secret phrase.
Hitori
Shade cells to eliminate duplicate numbers without breaking connectivity.
Sumplete
Delete numbers so each row and column sums to its target.
Wordga
Guess the hidden 5-letter word in 6 tries with color-coded feedback.
Crosswordle
Swap scrambled letters in a grid to form valid words in every row and column.
Squeezy
Insert letters into base words to form new valid words and reveal a secret.
Minesweeper
Reveal safe cells without hitting mines. Numbers show adjacent mine count.
Skyscrapers
Fill the grid so edge clues show how many buildings are visible.
Light Up
Place bulbs to illuminate all white cells. No two bulbs can see each other.
Star Battle
Place one star per row, column, and region. Stars cannot touch.
Tents
Place tents next to trees. Match row and column counts.
Mosaic
Fill cells so each numbered clue matches its 3x3 neighbourhood count.
Pipes
Rotate pipe segments to connect all pipes into a single network.
Nurikabe
Paint cells to form a connected sea around numbered islands.
Thermometers
Fill thermometers from the bulb to match row and column targets.
Hashi
Connect islands with bridges so each island has the correct count.
Slitherlink
Draw a single loop along edges. Numbers show how many edges touch each cell.
Dominosa
Pair adjacent numbers into dominoes. Each pair appears exactly once.
Shikaku
Divide the grid into rectangles containing one number equal to its area.
Shakashaka
Place triangles so all white areas form rectangles.
Renzoku
Fill the grid. Dots mark consecutive numbers between adjacent cells.
Kakurasu
Toggle cells on/off to match weighted row and column sums.
Killer Sudoku
Sudoku with caged groups showing their digit sum. No repeats in cages.
Jigsaw Sudoku
Sudoku with irregular jigsaw-shaped regions instead of 3x3 boxes.
Fillomino
Fill cells with numbers forming polyominoes. A group of N must have exactly N cells.
Numberlink
Connect matching number pairs with non-crossing paths. Every cell must be used.
Yin-Yang
Fill grid with black and white circles. Both colors must be connected, no 2x2 same color.
Kropki
Sudoku variant with dots: white means ±1, black means one is double the other.
Ripple Effect
Fill rooms with 1 to N. Same numbers in a row/column must be spaced N+1 apart.
Masyu
Draw a single continuous loop passing through all pearls. Black pearls turn, white pearls go straight.
Norinori
Shade exactly two cells in every region so that all shaded cells form dominoes.
Lights Out
Toggle the lights to turn them all off. Touching a light toggles it and its neighbors.
Sliding Puzzle
Slide numbered tiles into the empty space to arrange them in numerical order.
Memory Match
Flip cards to find and match the hidden pairs of fruits.
Towers of Hanoi
Move all disks to the rightmost peg without ever placing a larger disk on a smaller one.
Color Flood
Starting from the top left, flood the board with a single color within the move limit.
2048
Slide tiles and merge matching numbers to reach the 2048 tile.
Magic Square
Fill grid with unique numbers so that every row, column and diagonal sums to the same target.
ABC End View
Place letters so external clues show the first letter seen in that row or column.