Sharpen your eye.

How to extract meaning from what you can see, and why photographs are the ideal training ground.

The mental habits that separate Holmes from everyone else in the room.

Every investigative technique Holmes uses across the 60 stories, and which ones you can practise.

What Sherlock Holmes actually meant, and how to practise it yourself.

Sherlock Holmes almost never uses deduction. Here is what he actually does.

A structured method for seeing what everyone else filters out.

Why you miss obvious things, and the one habit that fixes it.

Ten concrete drills, from syllogisms to the Wason task, that you can run with paper, a timer, and one photograph.

A memory drill from a 1901 spy novel that still trains observers today.

All 60 stories in the order that makes the most sense for a first-time reader.

A curated comparison of the best daily puzzle games that test reasoning, not just vocabulary.

The two philosophies of the daily deduction puzzle, side by side, with the rest of the field placed around them.

Seven daily mysteries grouped by what you actually liked about Murdle: the grid, the story, or the morning ritual.

The daily deduction games worth your morning after Clues by Sam, grouped by the kind of reasoning you want more of.

A map of every kind of deduction game you can play in a browser, sorted by what each one makes you deduce.

A field guide to the free daily murder puzzles of 2026, from Murdle's authored grids to a machine that commits a new crime every night.

What actually runs free in a browser, what the ad portals really serve, and where the good paid games and the free stories live.