The Science of Deduction
🕵️ A Sherlock Holmes game — The consulting detective himself
"You see, but you do not observe." Train the difference. The AI conjures a stranger described only by what the eye can see — the frayed cuff, the ink-stained thumb, the walk — at your chosen difficulty. You write your deductions; Holmes grades them claim by claim, shows you what you missed, and delivers one dry remark you'll remember longer than the score.
- ✅ Free
- ✨ AI features with a free Google sign-in
- 🌐 Runs in your browser
What it does
A field notebook
Observations arrive on ruled aged paper, exactly as a detective would jot them.
Claim-by-claim grading
Bullseye, close, or miss — each with the observation that proves or disproves it.
Three difficulties
From generous tells to subtle chained inference with a deliberate red herring.
How to play
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1
Summon a stranger at your difficulty.
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2
Write everything you can deduce — chains score higher than guesses.
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3
Take your grade, read what you missed, summon another.
Your running average and best score are kept in this browser. Holmes remembers, even when you'd rather he didn't.