Tools / Game Room · Flagship · Mystery Solver
🔎 Sherlock Deduction Board
🕵️ A Sherlock Holmes tool — The consulting detective himself
The tool that started Elementary Tools. Give the board any mystery — pasted, typed, or conjured by AI — and watch Gemini pull out the clues, pin them to an interactive canvas, thread the connections between them, and deliver a conclusion with its full chain of reasoning. Holmes, Watson, and consultants of your own invention stand by for questioning.
✅ Free to use — no account, nothing to configure.
What it does
A living evidence board
Clues become draggable nodes joined by animated threads of reasoning on a pannable, zoomable canvas.
Consultants on call
Chat with Holmes and Watson, or invent your own experts and put your questions to them.
Two deduction engines
Fast Traditional analysis, or the Object-Oriented engine where every clue reasons and argues with the others.
How to use it
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1
Paste or conjure a mystery story.
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2
Click Deduce and watch the board assemble the case.
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3
Interrogate the conclusion — add clues, consult experts, re-run the reasoning.
Every case gets an AI-invented title, and everything runs free in your browser.