Knights always tell the truth, knaves always lie, read their statements to work out who is which.
On this island, every knight tells the truth and every knave lies. Each islander makes a statement about the others' types, and from the web of claims you must deduce every islander's type and uncover a hidden fact. Harder rounds add normals, who may say either, making the deduction tougher. Mark each islander once the logic forces it.
Knaves & Knights is built on the classic truth-teller and liar puzzles, sharpening deductive logic from contradictory statements.
The island where every knight tells the truth and every knave lies is Knights and Knaves, named by Raymond Smullyan in his 1978 book What Is the Name of This Book?
Smullyan was a logician, a stage magician and a concert pianist, and the puzzles carry all three: they are rigorous, they are tricks, and they are performed.
Adding normals — who may say either — is the variation that breaks the classic method. With only knights and knaves, any statement is a clean biconditional about its speaker; a third type who is unconstrained means a statement can carry no information at all, and recognising which ones are worthless becomes the actual puzzle.
Knaves & Knights is an original, free browser game built on the classic truth-teller and liar logic puzzles. It is built in-house and runs instantly online.