Free logic games
Grid and deduction puzzles where every clue counts and each puzzle has a single answer you can reason your way to.
Daily versions give everyone the same puzzle, so you can compare times.
44 games. No sign-up, scores saved on this device.
Sudoku
Classic 9×9 Sudoku with a fresh daily puzzle and three difficulty levels.
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Field Sweep
Uncover every safe square and flag the hidden mines using the number clues.
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Pixel Logic
Use the number clues to fill the grid and reveal a hidden picture. A fresh daily puzzle plus 5×5, 8×8 and 10×10.
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Crown Grid
Place one crown in every row, column and colour region, with no two crowns touching. Every grid has exactly one solution.
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Zip Path
Draw one unbroken path through numbered dots in order, covering every cell of the grid. A new daily grid every day.
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Pair Grid
Fill the grid with suns and moons: no three in a row, equal counts in every line, and obey the = and × clues. One solution each.
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Cipher Lock
Crack the secret code from a handful of clues. Each clue is a guess that tells you how many digits are right and how many are in the wrong place. A new lock every day.
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Sudoku 16
The classic number-place puzzle on a big sixteen by sixteen grid with four by four boxes. A new puzzle every day plus thirty levels, every one with a single solution.
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Masyu Loops
Draw one closed loop through every pearl. On a white pearl the loop goes straight and turns just before or after it. On a black pearl the loop turns and goes straight on both sides.
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Rule Check Desk
Work a border desk: read the rule sheet, check each applicant's papers against every rule and decide who comes in. Five shifts, each adding a rule, and the desk tells you which rule you missed.
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Cross Out
Shade numbers so none repeats in any row or column, no two shaded squares touch, and the unshaded squares stay connected. Daily and practice grids.
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Skyscraper Rows
Fill a grid with towers so every row and column holds each height once, and the clues around the edge match the towers you can see. Daily and practice.
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Camp Grid
Pitch one tent beside every tree so no two tents touch, matching the tent counts for each row and column. A shared daily grid plus practice sizes.
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Loop Fence
Draw one closed loop along the dots so each number matches how many of its four sides the loop touches. Daily and practice boards.
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Island Bridges
Link numbered islands with single and double bridges until every island has its bridge count and the whole archipelago is connected. Daily and practice maps.
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Inequality Grid
Fill a square with each number once per row and column, obeying the greater-than and less-than signs between cells. Daily and practice grids.
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Peg Jump
Jump pegs over their neighbours to remove them, finishing with a single peg on the cross-shaped board. Daily and practice puzzles.
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Speed Sudoku Four
A small 4 by 4 Sudoku with exactly one solution, built for a fast clean solve. Race the clock, use hints sparingly, and get a new grid every day.
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Disc Tower
Move a stack of discs from the left peg to the right peg, one disc at a time, never putting a bigger disc on a smaller one. Can you match the fewest possible moves?
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Light Path
Place slanted mirrors to steer a laser beam onto the target. Walls and fixed mirrors get in the way. Daily puzzle and three practice sizes.
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Logic Grid Mini
A small zebra-style logic puzzle: four houses, three categories and a handful of clues. Fill the grid by deduction, with a fresh puzzle every day.
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Jar Fill
Three jars of different sizes and a tap. Fill, empty and pour your way to an exact amount in the fewest moves you can.
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X Sudoku
Classic Sudoku with one extra rule: both long diagonals must also hold each digit from 1 to 9 exactly once. A fresh puzzle every day.
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Jigsaw Sudoku
Sudoku where the 3 by 3 boxes are replaced by nine irregular regions. Each row, column and region holds 1 to 9 once.
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Even Odd Sudoku
Classic Sudoku with clues in the shapes: a circle must hold an even digit and a square an odd one. Fewer numbers, more logic.
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Thermo Sudoku
Sudoku with thermometers. Digits along each thermometer rise from the round bulb to the tip, on top of the usual rules.
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Knight Sudoku
Sudoku where cells a chess knight's move apart can never hold the same digit. A twist that cuts the number of clues needed.
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King Sudoku
Sudoku where cells that touch diagonally may not repeat a digit, like a chess king that cannot attack itself.
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Windoku
Sudoku with four extra shaded 3 by 3 windows that must each hold 1 to 9, also known as Hyper Sudoku.
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Disjoint Sudoku
Sudoku where all cells in the same spot of their box must also differ: nine extra groups of nine.
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Centre Dot Sudoku
Sudoku where the nine shaded middle cells of the boxes must hold different digits, adding one extra group to the grid.
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Greater Than Sudoku
Sudoku with greater-than and less-than signs between some neighbouring cells, and fewer starting digits.
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Critter Sudoku
A Sudoku played with nine animals instead of numbers, on curved regions instead of boxes. Place each animal once in every row, column and region.
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Patch Fill
Cut the grid into rectangles so each one holds exactly one number and covers that many cells.
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Star Battle
Place one star in every row, column and coloured region, with no two stars touching, even at the corners.
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Colour Nonogram
Paint a picture in two colours using the coloured number lists beside every row and column.
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Nurikabe Daily
Fill in the sea so every island matches its number, the sea is one connected body, and no 2 by 2 block is all sea.
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Kuromasu
Colour some cells black so no two touch, the white cells stay connected, and each number counts the white cells it can see.
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Aquarium Fill
Fill glass tanks with water. Water settles at the bottom, and every row and column must hold exactly the amount shown.
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Yin Yang Dots
Colour every cell light or dark so each colour is one connected group and no 2 by 2 block is all one colour.
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Bimaru Solo
Find the hidden fleet. Ships are straight and never touch, and the numbers show how many ship cells each row and column holds.
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Whodunit Logic
Four suspects each say one thing, and you are told how many statements are true. Work out who did it.
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Alibi Check
Honest guests always tell the truth, liars always lie. Read what each guest says about the others and work out exactly who is lying. A new case every day.
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Code Blocks
Program a little robot with Forward, Turn left and Turn right blocks to collect every star. A daily puzzle and 30 levels teach real step-by-step thinking.
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