Friday 25 September 2026

How it works

Every witness is either honest or a liar. An honest witness only says true things, and a liar only says false ones, like the knights and knaves in Raymond Smullyan's puzzles. Each of them makes one statement below. Your job is to mark every witness honest or liar so that all the statements hold up together. Exactly one way of doing that works, and you can reach it by reasoning alone: try a guess, follow what it forces, and drop it the moment two statements clash.

The statements

1. The MasonThe Sculptor and the Pianist are different kinds.
2. The Night ClerkAt least two of us are liars.
3. The PianistThe Weaver is a liar, or I am, or both.
4. The SculptorThe Night Clerk and the Weaver are different kinds.
5. The FloristThe Mason and the Night Clerk are different kinds.
6. The WeaverThe Sculptor and the Mason are the same kind.