How to play
The rules of these logic puzzles in plain words, each with a worked example. Every puzzle in Quirk also starts with a short introduction and a practice board in the app.
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How to play Battleships
Find where the hidden ships lie on the grid.
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How to play Binairo
Fill every box with 0 or 1.
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How to play Bridges
Join all the numbered circles, called islands, with bridges.
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How to play Calcudoku
Fill the grid so each row and each column uses every number once.
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How to play Dominosa
Split a board of numbers into dominoes.
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How to play Fillomino
Write a number in every box.
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How to play Futoshiki
Fill the board so each number shows once in every row and every column.
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How to play Heyawake
Shade squares so each room with a number has that many shaded squares.
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How to play Hitori
Shade some of the numbers so no number shows twice in any row or column.
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How to play Kakuro
Put numbers from 1 to 9 in the empty boxes so each line adds up to the number at its start.
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How to play Kurodoko
Shade some squares dark so each number sees exactly that many light squares.
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How to play Light Up
Put lamps down so every wooden square is lit.
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How to play LITS
Make 1 shape of 4 black boxes in every outlined region.
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How to play Logic Grid
Use the clues to find out which things go together.
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How to play Magnets
Make each domino a magnet or leave it blank.
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How to play Masyu
Draw 1 closed loop that passes through every pearl.
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How to play Mini Sudoku
Fill the empty squares so each row, each column and each thick-lined box has every number once.
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How to play Nonogram
Colour boxes so each row and column matches its numbers.
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How to play Numberlink Cover
Draw a line to join each pair of matching letters.
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How to play Nurikabe
Decide which squares are sea and which are island.
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How to play Peg Solitaire
Jump pegs over each other until only 1 peg is left.
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How to play Shikaku
Cut the whole board into rectangles.
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How to play Skyscrapers
Fill the board with buildings so each height shows once in every row and column.
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How to play Slant
Draw one slanted line in every box.
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How to play Slitherlink
Draw one closed loop along the dots.
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How to play Sokoban
Walk around the board and push every crate onto a ring.
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How to play Spiral Galaxies
Cut the whole board into pieces called galaxies, with exactly 1 dot in each.
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How to play Star Battle
Put 1 star in every row, every column and every coloured region.
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How to play Static Minefield
Find the hidden mines.
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How to play Tapa
Make boxes black to build 1 black path that joins along box sides.
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How to play Tents
Give every tree its own tent right next to it.
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How to play Tube Sort
Sort the beads until each tube holds only one letter.
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How to play Word Ladder
Turn the start word into the target word.
Try them in Quirk
