Logic Puzzlesby Spark & Spiral
For teachers, librarians and activity leaders

Free logic puzzles for your class, library or group

Printable puzzle sheets with answer keys, a new puzzle pack every week, and a daily puzzle you can put on your own website. All free, with no sign-up. Every puzzle has a single answer you can reach by logic alone, no guessing.

Print

22 kinds of printable puzzle, with answers

Pick a size, press print or save a PDF, and press "New puzzles" for a fresh sheet whenever you need one. Answer keys print on a separate page. Free to print and share for classroom, library and personal use.

CrownsPlace one crown in every row, column and colour region.NonogramsPicture logic puzzles: shade cells to match the row and column clues.CalcudokuArithmetic cages on a Latin square.Tent LogicPitch one tent beside every tree, with no two tents touching.AquariumFill the tanks with water to match the edge counts.Logic Grid PuzzlesZebra-puzzle riddles with a full elimination grid and clue list.SlantDraw a diagonal in every cell to match the corner numbers, with no loops.Light UpPlace bulbs to light every cell without two bulbs seeing each other.MosaicFill cells so each number counts the filled cells around it, revealing a picture.GalaxiesSplit the grid into regions that are symmetric around their dots.ThermometersFill thermometers from the bulb up to match the row and column counts.Yin-YangFill the grid with black and white stones, each colour all connected.SkyscrapersPlace buildings of every height so the edge numbers count what you can see.LITSShade one L, I, T or S shape in every region.FutoshikiA Latin square with greater-than and less-than signs between cells.NurikabeShade the sea so every number sits on an island of that size.

See all 22 printable puzzles →

Every Monday

A free weekly puzzle pack

Six different puzzles plus a bonus logic grid, with answers on the last page. A new weekly pack is ready every Monday, and you can get it by email.

Your website

Add a free daily puzzle to your site

Paste this code into your library, class or group web page to show a daily Crowns logic puzzle. It has no ads and sets no cookies. See a live preview and setup help on the embed page.

<iframe src="https://logicpuzzles.ca/embed/daily" title="Daily Crowns logic puzzle" width="100%" height="800" style="border:0;max-width:460px;display:block;margin:0 auto" loading="lazy"></iframe>
<p style="text-align:center;font-size:14px">Daily puzzle from <a href="https://logicpuzzles.ca/">Logic Puzzles CA</a></p>
Play online

Puzzles that play in the browser

Nothing to install: these work in a web browser on computers, tablets and phones.

Browse them all: logic games and word games.

Ideas

Ways groups use them

Warm-ups and early finishersA 5x5 or 6x6 sheet takes five to ten minutes. Keep a stack of printed sheets for students who finish early.
Puzzle clubs and library programsPrint this week's pack for everyone, solve together, then compare strategies. Every puzzle has one answer you can reach by logic alone, so there is always something to explain.
Activity hours for older adultsChoose 4 puzzles per page for the biggest grids, and start with the smaller sizes. The daily puzzle gives a group something new to talk about each day.
Explain your reasoningAsk solvers to say why a square must be filled, not just that it is. Logic puzzles are a gentle way to practise careful step-by-step reasoning.

About us

Logic Puzzles CA is made by Spark & Spiral Software, a small puzzle studio in Canada. We make every puzzle ourselves and check each one has a single solution. Questions, or ideas for a puzzle sheet your group would like? Email [email protected].

Keep a list of resources for your students or members? You're welcome to link to this page.