Practise spotting clues.

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.

The recurring investigative techniques in the 60 Holmes stories, and the 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.

What picture-deduction puzzles are, why the clue hides in plain sight, and the habits that find it, with a scene to practise on.

The marks people leave without meaning to, read through four Daily Holmes rooms, the trap in each, and the doll-sized rooms built to train detectives.

The cup, the order, the ring and the sugar: what each can honestly tell you about a person, and where coffee personality quizzes turn into cold reading.

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.

Murdle, Clues by Sam, Deductionary, Mystery-o-matic, and Daily Holmes in one table: format, price, time, and the skill each one trains.

Free daily mysteries for five spare minutes, longer cases for a weekend, and two for the table, each checked on its official page.

Free dailies for your eyes, the map, numbers, logic, music, and evidence, each one loaded and checked before it made the list.

Where to find a new pair of pictures every day, which sites want your email first, and what to play when the differences should mean something.

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

Six free games like Murdle to play online, grouped by what you would miss most: the grid, the reading, or the murder.

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

Who Deductionary suits, then seven daily puzzles that scratch the same itch, from Clues by Sam to Queens and Pips, each checked on its own site.

Free browser deduction games for scenes, logic grids, words, and groups, compared by what each asks you to deduce.

A field guide to the free daily murder puzzles of 2026, from Murdle's logic grids to a mansion timeline with a fresh murder 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.