REAL PROBLEMS · TRACKS · 3 DIFFICULTY TIERS

Train for quant interviews on real problems, not theory dumps.

Probability, options pricing, portfolio theory, and Python — drilled the way they're actually asked. Instant feedback, worked solutions, and a rank you earn. Try one right now, no signup.

150Curated problems
30Free, no signup
3Tiers: easy → impossible
live_challenge.js — try before you sign up
The curriculum

Five tracks. Every problem hand-picked.

Each track runs three tiers — Easy to build intuition, Intermediate to apply it, and Impossible to pressure-test it the way an interview will.

How it works

Built like the interview, not a textbook.

Solve, don't skim

Every item is a multiple-choice problem with a single defensible answer. You commit, then you find out.

Worked solutions

Right or wrong, you get the reasoning — rendered with real math notation, so the why sticks.

Earn your rank

First correct solve banks XP and moves you up a ten-rung ladder from Rookie to Quant Goat. Progress saves on your device.

Your standing

Climb the ladder.

This updates live as you solve, reflecting exactly what you've earned.

😴
Rookie
0 / 150 problems solved
0 XP
Solve your first problem to get on the board.
Leaderboard

Where you stand.

Your row updates live as you solve. Climb past the field and own the top spot.

#QuantRankXP
Go further

Free gets you sharp. Membership keeps you there.

The 30-question Quant Basics track is free forever. Membership unlocks the remaining 120 problems plus everything that can't live in a static page.

Free
The Free Track
Genuinely useful on its own — enough to know if this fits how you learn.
  • Full Quant Basics track — 30 problems, all 3 tiers
  • The live challenge, unlimited
  • Worked solutions on every problem
  • Rank ladder + local progress
  • Member tracks limited to a short preview
Member
Full Access
Unlock via YouTube Membership (recommended) or the full course.
  • All 9 tracks — 250 problems unlocked
  • New problem sets added regularly
  • Progress synced across devices (your backend)
  • Global leaderboard placement
Track
🔥 0 0 XP