Knights & Knaves Puzzles
Puzzlers Hub
Three new Knights & Knaves puzzles daily
Challenge your logic. Build your skills. Have fun.
Three new puzzles every day.
Thousands of puzzles to explore
Easy, Medium, & Hard logic puzzles
Today’s Free Knights & Knaves Puzzle
Three new Knights & Knaves puzzles every day — Easy, Medium, and Hard challenges for every skill level.
Unlock the complete Library, including every puzzle ever published.
Part of the Knights & Knaves collection in the Puzzlers Hub.
Knights & Knaves Puzzle
Loading Knights & Knaves...
Recent Knights & Knaves Puzzles
Today’s puzzle is just the beginning. Unlock the complete Knights & Knaves Library with every puzzle ever published—and a brand-new puzzle added every day.
Daily Puzzle Release
Brand-new Knights & Knaves puzzles every day.
Sharpen Your Mind
Boost logic, focus, and problem-solving skills.
Track Your Progress
Build your streak and
track your progress.
Growing Library
Unlock thousands of brain-teasing puzzles.
Did You Know?
Knights & Knaves Puzzles Were Created by a Logician
American mathematician Raymond Smullyan introduced Knights & Knaves puzzles in the 1970s. His books turned formal logic into entertaining brain teasers that are still enjoyed by puzzle lovers around the world today.
Every Puzzle Has One
Logical Solution
A well-designed Knights & Knaves puzzle isn’t based on guessing. Every clue works together to produce one unique solution that can be reached using careful deduction and logical reasoning.
They’re Used to Teach
Logical Thinking
Knights & Knaves puzzles are often used in mathematics, philosophy, and computer science courses because they help students practice deductive reasoning, identify contradictions, and evaluate logical arguments.
Truth and Lies Can Reveal
the Same Answer
One of the cleverest features of Knights & Knaves puzzles is that both truthful statements and lies provide useful information. By understanding how each type of character behaves, every statement becomes another clue toward solving the puzzle.
Puzzle Tips
New to Sudoku or looking to improve your skills? These simple techniques can help you solve puzzles faster and with greater confidence.
Start with the Simplest Statements
Look for statements that mention only one character. Simple claims are often the easiest place to begin building your chain of logic.
Use Every Statement
Many Sudoku breakthroughs come from carefully examining the boxes.
Assume, Then Test
If you’re unsure whether a character is a knight or a knave, make an assumption and follow it through. If it creates a contradiction, you’ve found the wrong answer.
Build on What You Know
Once you’ve identified one knight or knave, use that information to evaluate the remaining statements. Each correct deduction unlocks new clues.
Watch for Contradictions
A contradiction is one of your strongest clues. If a set of assumptions can’t all be true, rethink your starting point.
Think Logically, Not Intuitively
Ignore what you think a character “would” say. Focus only on whether each statement is consistent with the rules that knights always tell the truth and knaves always lie.
Explore the Puzzlers Hub Collection
Looking for a different challenge? Explore nine puzzle types with new puzzles added every day.
Frequently Asked Questions
-
Knights & Knaves puzzles are logic puzzles where each character is either a knight, who always tells the truth, or a knave, who always lies. Your goal is to determine who is who by carefully analyzing what each character says.
-
Start by assuming one statement is true and follow its logical consequences. If you reach a contradiction, your assumption must be false. Continue testing possibilities until every statement fits together consistently.
-
No. Knights & Knaves puzzles use logical reasoning rather than mathematics. Anyone who enjoys solving mysteries or deductive puzzles can learn to solve them.
-
Yes. Every puzzle is carefully designed to have one unique solution that can be reached using logic alone.
-
Take a closer look at each statement and consider what would happen if a character were a knight or a knave. You can also use the Help feature or reveal the solution if you’d like to learn from the puzzle.
-
A brand-new Knights & Knaves puzzle is released every day, giving you fresh logical challenges to enjoy.
-
Today’s puzzle is free for everyone to enjoy. To access our growing puzzle library and play thousands of past puzzles, you’ll need a Puzzlers Hub membership. Members enjoy unlimited access to every puzzle, with new ones added every day. Learn more.
-
Yes. Your progress, completed puzzles, statistics, and puzzle streak are automatically saved on your device in your browser of choice, so you can continue where you left off.
-
Yes. These puzzles help develop logical reasoning, critical thinking, deduction, and careful analysis while providing an enjoyable mental workout.
-
Yes. Each daily release includes Easy, Medium, and Hard versions of the puzzle. As the difficulty increases, you’ll encounter more characters and more complex chains of logical reasoning.