How to play

For people playing for the first time. Every picture is a real screenshot.

Board Two players, face to face

A screenshot of Janggi Janggi Korean chess, played straight in the browser. Full rules, against the computer or against a friend anywhere.A screenshot of Go Go 9, 13 and 19 lines. Captures, suicide and ko all enforced. The computer plays games out to the end to pick its move.A screenshot of Reversi Reversi Every piece caught between two of yours becomes yours. Near the end the computer reads the game right out to the last move.A screenshot of Gomoku Gomoku Five in a row wins. Black alone is held back by the double-three and overline bans, which evens the game out. Banned points are marked with an ✕.A screenshot of Bingo Bingo The bingo you played at school. A called number is crossed off on both boards at once — so it is not luck, it is what you choose to call.A screenshot of Yut Nori Yut Nori The Korean stick game. Throw the four sticks and race your four pieces home. Captures, stacking and shortcuts included.

Cards Solitaire and card games

A screenshot of Klondike Solitaire Klondike Solitaire Only deals that have been played to the end and proven winnable. You can also ask whether the deal you are on is still alive.A screenshot of FreeCell FreeCell Deal numbers match every other FreeCell. Deal 1 is deal 1 anywhere. Nothing is face down, so it is thinking rather than luck.A screenshot of Spider Solitaire Spider Solitaire Build King down to Ace in one suit and clear eight runs. Winnable deals only.A screenshot of Pyramid Solitaire Pyramid Solitaire Take pairs that add up to 13 and bring twenty-eight cards down. Winnable deals only.A screenshot of Golf Solitaire Golf Solitaire Chain cards one rank up or down and clear all thirty-five. Every deal is worked out to the end before it is handed out.A screenshot of TriPeaks Solitaire TriPeaks Solitaire Take down three peaks one rank at a time. The longer the chain runs, the harder the score climbs.A screenshot of Yukon Solitaire Yukon Solitaire No stock pile — all fifty-two cards are on the table. Any face-up card moves with everything on top of it.A screenshot of One Card One Card Match the suit or the rank. 2 and Ace make them draw, 7 changes the suit. The computer sees only its own hand.A screenshot of Cheat Cheat Cards go down face-down and you only say what they are. When you have none, you have to lie. The computer works out when to call you.A screenshot of Speed Speed No turns. Both players go at once. Whoever plays one rank up or down first takes the pile.A screenshot of Memory Match Memory Match Turn two at a time and find the pairs. The computer only remembers what has actually been shown — and on easy it forgets more.A screenshot of Old Maid Old Maid Whoever is not holding the odd card at the end wins. The trick is not hiding it — it is getting someone to take it.A screenshot of Spot the Pair Spot the Pair Everything is laid out and you find it by eye. There is exactly one matching pair on every board.

Puzzles Worked out in your head

A screenshot of Sudoku Sudoku Only puzzles with a single answer. Every time a digit is removed, the puzzle is re-checked to make sure the answer has not split in two.A screenshot of Nonogram Nonogram Only puzzles that never need a guess — each one is solved line by line to the very end before it is handed out.A screenshot of Minesweeper Minesweeper Only boards that never need a guess — each one is checked to the end using nothing but the deductions a person would make. You never die unfairly.A screenshot of Lights Out Lights Out Pressing a square flips it and its neighbours. Turn every light off to win. Only boards that are certain to be solvable.A screenshot of Sliding Puzzle Sliding Puzzle Slide tiles into the gap to put the numbers in order. Boards that cannot be solved are never handed out.A screenshot of Futoshiki Futoshiki Sudoku with greater-than and less-than laid over it. Every board is solvable by reasoning alone, never by guessing.A screenshot of Tents and Trees Tents and Trees One tent for every tree. The counts down the rows and columns are the clue. Only boards with a single answer.A screenshot of Shikaku Shikaku Cut the whole board into rectangles, each as big as the number inside it. Only boards with a single answer.A screenshot of Bridges Bridges Join the islands with bridges. Nothing may cross, and everything must end up connected. Only boards solvable by reasoning.A screenshot of One Stroke One Stroke Trace every line exactly once without lifting the pen. Count the odd points and you can tell in advance whether a figure can be drawn at all.A screenshot of Knight's Tour Knight's Tour Move in L shapes and land on every square exactly once. You only ever start from a square a full tour really exists from.A screenshot of Bulls and Cows Bulls and Cows Work out the hidden number from strikes and balls alone. It is not a guessing game, it is a reasoning game.A screenshot of Traffic Jam Traffic Jam Cars only slide forwards and backwards. Clear a path and get your car out of the exit on the right. It also tells you the fewest moves possible.A screenshot of Drop and stack Drop and stack A falling-block puzzle. Three-square pieces for an easy game, twelve pentominoes for a hard one.