Games & puzzle generators
Crosswords, word searches, sudoku, mazes and more — generated entirely in your browser, ready to solve on screen, print or embed on your own website.
Most popular
Crossword Maker
Turn your own words and clues into a printable, playable crossword puzzle.
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Deck Odds Calculator (TCG)
Exact draw odds for your card deck: opening hands, combo pieces by turn and mulligan math for any TCG.
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Fill-In Puzzle Generator
Build fill-in (kriss-kross) puzzles: fit the word list into an interlocking grid.
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Kakuro Generator
Generate kakuro (cross sums) puzzles with a guaranteed unique solution.
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KenKen (Calcudoku) Generator
Generate calcudoku (mathdoku) puzzles: Latin squares with arithmetic cages and a unique solution.
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Logic Grid Puzzle Generator
Generate zebra-style logic grid puzzles with a unique solution and crack them on the interactive grid.
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Maze Generator
Generate printable mazes in several sizes and styles, with an optional solution path.
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Rubik's Cube Solver & Timer
Scramble, solve and race a 3D Rubik's Cube — with a step-by-step solver and a speedcubing timer.
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Sudoku Generator
Generate sudoku puzzles with a unique solution at five difficulty levels.
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Sudoku Solver
Solve any sudoku step by step — every move names the human technique that finds it.
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Word Search Generator
Build printable word search puzzles from your own word list.
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Wordle Solver & Explorer
Enter your guesses and colors — get the best next guess.
Word Puzzles
Crossword Maker
Turn your own words and clues into a printable, playable crossword puzzle.
popular
Fill-In Puzzle Generator
Build fill-in (kriss-kross) puzzles: fit the word list into an interlocking grid.
popular
Word Search Generator
Build printable word search puzzles from your own word list.
Cryptogram Maker
Encrypt a quote with a substitution cipher and share it as a puzzle.
Word Ladder Solver & Generator
Solve word ladders with BFS or generate printable ladder puzzles with a verified shortest path.
Logic Puzzles
Kakuro Generator
Generate kakuro (cross sums) puzzles with a guaranteed unique solution.
popular
KenKen (Calcudoku) Generator
Generate calcudoku (mathdoku) puzzles: Latin squares with arithmetic cages and a unique solution.
popular
Logic Grid Puzzle Generator
Generate zebra-style logic grid puzzles with a unique solution and crack them on the interactive grid.
popular
Sudoku Generator
Generate sudoku puzzles with a unique solution at five difficulty levels.
Futoshiki Generator
Generate futoshiki inequality puzzles (4×4 to 7×7) with a unique solution.
Hashiwokakero (Bridges) Generator
Generate hashiwokakero puzzles: connect the numbered islands with bridges.
Hitori Generator
Generate hitori puzzles (5×5 to 9×9): shade cells so no number repeats in a row or column.
Nonogram Maker
Turn a pixel drawing into a nonogram (picross) puzzle with row and column clues.
Skyscrapers Puzzle Generator
Generate skyscrapers puzzles: place towers so the edge clues count the visible buildings.
Slitherlink Generator
Generate slitherlink loop puzzles (5×5 to 10×10) with a guaranteed unique solution.
Puzzle Solvers
Sudoku Solver
Solve any sudoku step by step — every move names the human technique that finds it.
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Wordle Solver & Explorer
Enter your guesses and colors — get the best next guess.
Kakuro Solver
Solve kakuro (cross sums) puzzles with the sum-combination reasoning spelled out at every step.
Minesweeper Probability Solver
Enter your minesweeper position and get the exact mine probability for every hidden cell.
Nonogram Solver
Solve nonograms (picross) line by line with an explanation for every deduced cell.
Scrabble Best Move Finder
Rebuild your scrabble board, type in your rack and get the highest-scoring legal moves — in English, Danish, German, Norwegian, Polish or Romanian.
Print & Party
Gaming Tools
Deck Odds Calculator (TCG)
Exact draw odds for your card deck: opening hands, combo pieces by turn and mulligan math for any TCG.
popular
Rubik's Cube Solver & Timer
Scramble, solve and race a 3D Rubik's Cube — with a step-by-step solver and a speedcubing timer.
Backgammon Doubling Cube Advisor
Money-game cube decisions from win and gammon rates: double, take or pass — with the thresholds shown.
Yahtzee Best Move Advisor
Set your five dice and see the mathematically best keep and category, computed by exact expectimax.
Brain & Reflex Tests
Color Discrimination Test
Spot the one tile with a slightly different color — the difference shrinks every time you get it right.
Contrast Sensitivity Test
How faint a pattern can you still see? A staircase test that estimates your contrast threshold.
Doomsday Weekday Trainer
Learn to name the weekday of any date in your head with the Doomsday algorithm — then drill it.
Hearing Frequency Test
Find the highest pitch you can hear and sketch your hearing profile across octave bands.
Mental Math Trainer
Timed arithmetic drills with streaks, accuracy and a per-operation breakdown — keyboard or keypad.
N-Back Working Memory Test
The dual N-back task from working-memory research: match positions and letters N steps back.
Reaction Time Test
Click the instant the panel turns green — five tries, your average and best in milliseconds.
Typing Speed Test (WPM)
One-minute typing test with live WPM, accuracy, per-key error stats and a consistency score.
About these tools
Puzzle makers and game utilities: generate printable crosswords, word searches, sudoku, nonograms, kakuro, mazes and logic grid puzzles, or solve and check existing ones. Finished puzzles can be printed, downloaded or published as an interactive embed to share on your own website.