Every DILR set hides a pitfall. Learn to see it coming.
Free, every morning: one DILR set — a data-and-logic puzzle — delivered to you. We pinpoint the set-types that trip you up, and show you exactly where your reasoning slipped.
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Three things, done well.
Find your blind spots
A short diagnostic spots which set-types — grids, games, caselets — quietly cost you marks, then weights every set toward them.
Explain why you missed it
Not just the right method. Our AI reads your actual approach and shows where your reasoning broke — the part textbooks skip.
One set a day, that's it
No 40-hour course to begin. A single, real, exam-timed set every morning builds the habit that actually moves your percentile.
Can you avoid the pitfall?
Five students, five days.
- X took the test on an earlier day than Y.
- Exactly two people sat the test on the days between Z's day and W's day.
- V took the test on Wednesday.
- Y did not take the test on Friday.
- Z took the test on an earlier day than W.
Q1. Who took the test on Monday?
Q2. On which day did W take the test?
The pitfall: most people grab “X before Y” and “Z before W” and start guessing whole orders. The unlock is clue 2 — “exactly two people between Z and W” means their days are three apart, so (Z, W) is either Mon–Thu or Tue–Fri. In the Mon–Thu case the leftover days (Tue, Fri) must go to X and Y with X before Y — forcing Y onto Friday, which clue 4 forbids. So it has to be Tue–Fri, and the rest falls out. Turn “two between” into a fixed distance first — that's the instinct the daily set builds.
The most feared section. Also the most trainable — if you practise the right way, every day.
Good to know
Spot the pitfall before it costs you.
Free daily DILR set. We'll only ask for more once it's working for you.