Case Library
Our deep cases, and an index of everyone else’s
Two shelves. Ours: 15 original cases, run with the Interviewer and scored. Theirs: an index of free cases from clubs and firms, listed and linked, never hosted here.
Our deep cases
Every case on this shelf carries the same parts:
- An original prompt written for this product
- A model structure that opens the case without a memorized framework
- At least two exhibits with figures that agree with each other
- Step by step probing from the companion, with captions and speech in your device voice today. The studio voice connects at launch
- At least two math checks with fully worked answers
- A common traps section naming the mistakes candidates make here
- A strong recommendation example and a rubric debrief that feeds your readiness
15 cases · 1 free · Starter 2 · Standard 5 · Advanced 8
Free
Harbor Bean Coffee
A regional coffee chain with forty stores has watched profit fall for two years while revenue held steady. Find where the profit went and say what you would do first.
Paid
Voltpath Charging
A maker of electric vehicle charging hardware sells to workplaces. It is deciding whether to enter the highway corridor market. Size the opportunity and make the call.
Paid
Northwind Outfitters
An outdoor goods retailer has flat sales in a growing market. Work out which lever matters most and build a growth plan around it.
Paid
Meridian Foods
A packaged food manufacturer faces rising input costs it cannot pass on in full. Find the cost lines worth attacking and protect the ones that hold the brand up.
Paid
Loopbox
A subscription software company prices one tier for every customer. Decide whether a second tier helps or hurts, and set the price gap between them.
Paid
Pulseband
A fitness device maker has a new band that tracks sleep in detail. Plan the launch: first buyers, channel, price, and the number that decides success in year one.
Paid
Atlas Freight
A regional freight carrier can buy a smaller rival whose routes overlap its own. Value the overlap honestly and decide whether the deal earns its price.
Paid
Clearline Clinics
An investor is weighing a chain of outpatient clinics. Build the case for and against, and name the diligence question that matters more than the rest.
Paid
Sable Air
A low cost entrant just started flying your client's three most profitable routes. Decide what to defend, what to give up, and what it costs either way.
Paid
Fernholt Plants
A plant network runs two factories far below capacity and one above it. Rebalance the work and show the savings without breaking delivery promises.
Paid
Cobalt Air
A mid size airline grew revenue last year and still landed at zero operating profit. Find where the profit went, judge the new routes the finance team wants to cut, and set the order of your fixes.
Paid
Keystone Castings
A castings maker runs four plants at very different costs per unit. Decide whether closing the smallest plant and moving its volume pays, and cost the closure honestly, including the costs that do not go away.
Paid
Bareleaf
A direct to consumer personal care brand grew site traffic by half last year while revenue barely moved, and growth has now stalled. Find where the model broke and rebuild the plan around the failing numbers.
Paid
Copperline
A business software company lists one price and collects another, after years of discounting. Restructure the tiers and the discounting together, and show what the new model is worth after the churn it causes.
Paid
Arclight Charging
A charging network has budget for one serious launch across three candidate metros. Pick the metro and the build model, and prove both choices with per station economics.
Finished cases count. A scored run that averages at least 3.5 of 5 across the rubric solves the case, and solved cases are ranked on the board. See the solved cases board
Run a case with the Interviewer
The Interviewer hosts the deep cases on this page in the Case Room. He asks the questions, follows your reasoning, and scores the run against the rubric. Ask him about any stage or case and he answers from the guide itself.
The Interviewer is in the corner of every page. He runs cases, drills your math, and names the part of your game that needs work. He speaks in your device voice today. The studio voice connects at launch, and his memory travels with you.
The external case index
402 entries, live now: 391 individual cases listed one by one, and 11 case books and published sets still listed at book level, the ones whose individual case titles could not be verified from the book itself. Between them the entries represent 519 cases, counted entry by entry under the index’s rules: a case printed in two books is counted once, and book level counts are the labeled figures on their cards. Every entry names its source and links out to it. The cases belong to the clubs and firms named on each card. This site is not affiliated with them, and their names appear only to identify the source.
Browse the index Contribute a case
The count on this page is the count of live entries, computed from the index data itself. It grows as books are indexed case by case and as member contributions clear review. We will not print a bigger number than the index holds.