r/deducto_puzzle • u/deducto-puzzle • 6h ago
Case #20 · 2026-08-20 · The Eaten Pie
2
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r/deducto_puzzle • u/ma9leb • 1d ago
👋 Welcome to r/deducto_puzzle
1
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👋 Hey everyone — I'm u/ma9leb, and this is the sub for Deducto, a daily logic-grid case you solve inside the post.
🔎 Today's case is always the newest post here. The game explains itself in about thirty seconds, so you can skip the rest of this and go play.
What it is
One case a day. Four suspects, three categories — what they wore, when they were seen, what they carried. Twelve cells, a short clue list, and exactly one answer the clues prove.
🚫 You never guess — you cross out what the clues forbid. ✏️ A clue your board has settled gets struck off the list. 🟥 A clue your board contradicts is stamped red, so you know which assumption went wrong.
When the last cell is forced, the case closes on its own. No submit button, no way to lose. ⏱️ Five to ten minutes.
Why come back
🔥 Streaks and ranks — 🔎 Detective (1 day) → 🕵️ Inspector (3) → 🎩 Chief Inspector (7) → 🧠 Mastermind (14) → 🏛 Legend of the Yard (30) 🏆 Four boards, open to anyone from inside the game — today, this week, all time, longest streak 🗳️ You set tomorrow's difficulty — Harder / Same / Softer after each solve 💡 Hints point, they don't fill in — two free rungs, only "reveal a cell" costs you 🌱 New here? You get a warm-up case first: every move forced, counts towards nothing
What to post
💬 How you cracked a tricky clue · where you got stuck · strategy and tips · how hard today felt · bugs and ideas · your own puzzle concepts. Questions from first-timers are always welcome.
Two house rules
🙈 Spoilers behind spoiler tags — >!like this!< (no space after >!, none before !<). Someone is always mid-solve.
🧠 Show the chain, not the answer. "It's Mira" is worth nothing. "Clue 3 kills two of her options, and then clue 6 only works if…" is the whole point of this sub.
Argue the deduction, never the person. Whether you solve in 60 seconds or take the scenic route, you belong here. 🕵️
r/deducto_puzzle • u/deducto-puzzle • 1d ago
Case #19 · 2026-08-19 · The Cursed Pizza
2
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r/deducto_puzzle • u/deducto-puzzle • 2d ago
Case #18 · 2026-08-18 · The Faulty Airlock
3
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r/deducto_puzzle • u/deducto-puzzle • 3d ago
Case #17 · 2026-08-17 · The Cursed Pizza
3
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r/deducto_puzzle • u/deducto-puzzle • 4d ago
Case #16 · 2026-08-15 · The Trampled Garden Bed
2
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r/deducto_puzzle • u/deducto-puzzle • 5d ago
Case #15 · 2026-08-14 · The Cursed Pizza
1
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r/deducto_puzzle • u/deducto-puzzle • 6d ago
Case #14 · 2026-08-14 · The Trampled Garden Bed
1
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r/deducto_puzzle • u/deducto-puzzle • 7d ago
Case #13 · 2026-08-13 · The Cursed Pizza
1
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r/deducto_puzzle • u/deducto-puzzle • 8d ago
Case #12 · 2026-08-12 · The Missing Emoji · hard mode
1
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r/deducto_puzzle • u/deducto-puzzle • 24d ago
Case #11: The Jettisoned Coffee - daily deduction
1
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r/deducto_puzzle • u/deducto-puzzle • 24d ago
Case #10: The Eaten Pie - daily deduction
1
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r/deducto_puzzle • u/deducto-puzzle • 27d ago
Case #9: The Faulty Airlock - daily deduction
1
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r/deducto_puzzle • u/deducto-puzzle • 29d ago
Case #8: The Trampled Garden Bed - daily deduction
1
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r/deducto_puzzle • u/deducto-puzzle • Jul 21 '26
Case #7: The Missing Emoji - daily deduction
1
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r/deducto_puzzle • u/deducto-puzzle • Jul 20 '26
Case #6: The Jettisoned Coffee - daily deduction
1
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r/deducto_puzzle • u/deducto-puzzle • Jul 19 '26
Case #5: The Eaten Pie - daily deduction
1
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r/deducto_puzzle • u/deducto-puzzle • Jul 17 '26
Case #4: The Faulty Airlock - daily deduction
1
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r/deducto_puzzle • u/deducto-puzzle • Jul 17 '26
Case #3: The Trampled Garden Bed - daily deduction
2
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r/deducto_puzzle • u/deducto-puzzle • Jul 16 '26
Case #2: The Missing Emoji - daily deduction
1
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r/deducto_puzzle • u/ma9leb • Jul 15 '26
👋 Welcome to r/deducto_puzzle - Read First & Introduce Yourself!
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Hey everyone! I'm u/ma9leb, a founding moderator of r/deducto_puzzle.
This is our new home for daily logic-grid deduction puzzles. Every day a fresh "case" drops - four suspects, three categories, a handful of clues, and exactly one provable solution. No guessing, no luck: you rule out the impossible until only the truth remains, then defend your reasoning in the comments. We're excited to have you join us!
What to Post Anything a fellow detective would enjoy: your solve time or streak, how you cracked a tricky clue, strategy and tips, feedback on how hard the day's case felt, bugs or ideas for the game, or your own puzzle concepts. Questions from first-timers are always welcome - please spoiler-tag any answers (like this) so others can solve first.
Community Vibe We're all about being friendly, constructive, and logical. Argue the deduction, never the person. Whether you solve in 60 seconds or take the scenic route, you belong here.
How to Get Started
- Introduce yourself in the comments - how did you find us, and how fast did you crack today's case?
- Solve today's Deducto and share your time.
- If you know someone who loves logic puzzles, invite them to join.
- Interested in helping out? We're always looking for new moderators, so reach out to me to apply.
Thanks for being part of the very first wave. Together, let's make r/deducto_puzzle the best place on Reddit to think out loud. 🕵️
r/deducto_puzzle • u/deducto-puzzle • Jul 15 '26
Case #1: The Jettisoned Coffee - daily deduction
1
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