Catalogue record · hackernews
A daily deduction puzzle. One hex on the chart is drawn as something it is not. Every note you are given is true, and only one hex can satisfy all of them at once.
Show HN: A daily deduction puzzle where one hex on a nautical chart is a lie
Seen on hackernews · last checked 2026-10-21.
The teardown — how it actually charges, which mechanism was found, and the seam worth taking — is in the daily letter. This page carries the record and the signals so search engines and link previews have something real to read; the judgement stays with the readers who asked for it.
Get the daily letterThe same record sits in the full catalogue, where every entry can be searched and filtered by the signals above.