Puzzles
Logic puzzles
Use the clues to fill in the grid one square at a time. 26 works
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Number Place
Find each digit’s place with logic.
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Mini Number Place
Find each digit’s place with logic.
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Black & White Grid
Two colours, a grid full of deductions.
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Nonogram
Follow the clues to reveal a picture.
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Bulb Placement
Light up every cell, but no bulb may shine on another.
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Mine Logic
Every step follows from the numbers.
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River Crossing
What can you safely leave behind?
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Latin Square
Every digit once in each row and column.
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Inequality Grid
Let the signs between cells lead the way.
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Cage Arithmetic
Make every cage calculation fit a Latin square.
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Skyline Grid
Outer numbers count the buildings you can see.
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Cross Sums
Find the digits where the crossing sums agree.
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Tents and Trees
A quiet campsite, one tent per tree.
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Star Placement
Give every region its share of stars.
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Erase Repeats
Remove repeats while keeping the white cells connected.
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Bridge Builder
Join the islands with exactly the bridges their numbers ask for.
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Single Loop
Join the dots into one closed loop that matches the numbers.
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Pearl Loop
A single loop, with a different turn rule for each pearl.
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One Stroke
Trace every line once without lifting the pen.
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Pair Link
Join matching numbers and cover every cell.
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Rectangle Split
Cut the board into rectangles whose areas match the numbers.
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Number Regions
Let each number define the size of its region.
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Torch Across the Bridge
One torch, one bridge. Get everyone across fast.
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The Odd Coin
Three weighings to find the odd coin among 12, and say whether it is heavy or light.
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Logic Grid
Match people, pets, and drinks using the clues.
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Truth-Tellers and Liars
Whose words can you trust?