Three attempts — then the answer, either way
Get it right and the worked walkthrough opens. Get it wrong three times and it opens too. You never close a puzzle still not knowing how it was done.
Daily reasoning · IBPS · SBI · SSC · RRB · UPSC
Make the section everyone fears your strongest.
Reasoning decides a huge share of your marks, and most aspirants lose them to the clock, not the logic. Deduce gives you three exam-grade puzzles a day — Easy, Medium and Hard — each machine-proven to have exactly one answer, so the key is never wrong.
No account needed to play. Free forever — today's puzzles always are.
Every puzzle solver-verified
29 exam formats
~5 minutes a day
3 a day
Easy, Medium and Hard — each on its own clock, fresh every day
29
Exam formats in the rotation — Flat & Floor Uncertain Linear Row Square In/Out Box Stacking Only a Few Syllogisms Coded Inequalities
Exactly 1
Proven solution per puzzle, before it is ever served
6 exams
Banking, SSC, RRB, UPSC, State PSC and campus placement — the mix tunes to yours
What actually happens when you tap Start
No surprises, no signup wall, no trial countdown running in the background.
You get
Three puzzles for today — Easy, Medium and Hard — each with its own clock.
You have
Three attempts. Get it right and the solution and full walkthrough unlock. Run out and they unlock anyway — you always see how it was done.
It takes
About five minutes. Your time is measured on our server, so the leaderboard is honest.
Then
It resets at midnight IST with three new puzzles. That is the whole habit — show up, every day.
It costs
Nothing. All three daily puzzles are free forever, and you can play them without an account.
1
Set your exam — once
Banking, SSC, RRB, UPSC, State PSC or campus placement, picked at sign-in. Every day's puzzles tune to it automatically — no re-picking.
2
Solve it properly
Three attempts, server-timed, one provably correct answer. Then read the worked walkthrough.
3
Keep the streak
Come back tomorrow. Watch your times drop, climb the board, challenge friends in a private league.
What's past the first puzzle
Six things the app does for an aspirant, shown rather than described. Every one of these is a real screen — the labels below are the labels you'll tap.
Server-timed, so the board is worth climbing
Your clock starts and stops on our server, never in your browser. Nobody can pause it, reload out of it, or edit it — which is the only reason a leaderboard means anything.
A streak short enough to actually keep
About five minutes a day, reset at midnight IST. Preparation fails on consistency far more often than on ability — the streak is the part that fixes that.
Saarathi drills what you keep getting wrong Pro
Your tutor sits in the Saarathi tab, third along the bottom bar. It reads which formats you lose marks on and sets those — not the ones you already own.
Your exam decides the mix
Banking, SSC, RRB, UPSC, State PSC or campus placement — chosen once at sign-in. The daily rotation then weights the formats your paper actually asks, without you re-picking.
Past Puzzles, unlimited Pro
The whole archive, any day, any of the 29 formats. Dropped Coded Inequalities on Tuesday? Do ten of them tonight instead of waiting for it to come round again.
We'll nudge you when tomorrow's puzzle is live
One short nudge a day so the streak survives a busy week. No account needed — just an address. Unsubscribe in one tap, any time.
We send the daily nudge and nothing else. No sharing, ever.
One subscription · both apps
Reasoning is half the exam. Speed is the other half.
The Complete Prelims Sectional Habit (15-minute daily cross-app conditioning):
10 Minutes on Deduce: 1 Prelims/Mains level reasoning puzzle + walkthrough analysis.
5 Minutes on ComputePrep: 3 timed speed-maths drills (Arithmetic, Series, Quadratic).
Result: Daily sectional stamina without mental burnout. Pro covers both, in one subscription.
DeduceDaily reasoning — get it provably right
ComputePrepTimed quant & Vedic speed — beat the clock
Simple pricing
The daily puzzle is free forever. Pro is for when you want the coach and unlimited practice.
Free
₹0
Forever — the daily habit
- Today's puzzle, all three levels
- Streaks and leaderboards
- Private leagues with friends
- Step-by-step elimination walkthrough showing anchor clue identification and exact case rejection points
BOTH APPS
Pro
₹1,499 /yr
or ₹199/month · 7-day free trial
- Saarathi — your reasoning coach
- Unlimited practice + full archive
- ComputePrep speed drills included
- Cancel any time
Lifetime Founders
₹2,999
One-time · first 100 supporters
- Everything Pro gives you on Deduce, for life
- Saarathi coach, archive, unlimited practice
- Every Deduce puzzle book included
- Locked founder price, never billed again
Questions
Is it really free?
Yes. Today's puzzle is free forever, at all three levels, and you can solve it without making an account. Pro adds the Saarathi coach, unlimited practice and the full archive.
What does "solver-verified" mean?
Every puzzle is checked by the engine before it is served, and no puzzle ships unless it has been proven to have exactly one solution. So the answer key is never wrong and you are never learning a method that only works by luck.
Which exams is this for?
Banking (IBPS, SBI, RBI), SSC, RRB, UPSC and State PSC — plus a campus-placement stream for TCS NQT-style aptitude tests. You pick your exam and the daily tunes its topic mix to it.
Do I need to install anything?
No. It runs in your browser and installs as an app if you want it to. Start on your phone in a few seconds.
Why should I sign in?
So your streak, times and progress survive a cleared cache or a new phone — and so we can send you the daily nudge. You can sign in with Google or with an email code; no password to remember either way.