Guides

Case interview blog

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All(527)Getting started(126)Case interview prep(57)Frameworks(57)Math and quant(14)Fundamentals(63)Firm guides(171)Recruiting(20)Comparisons(18)Career guidance(1)

Firm guides
McKinsey PEI Format: Dimensions, Probing, and Scoring
What the McKinsey Personal Experience Interview actually is: the four published dimensions, how one story is probed for 10–15 minutes, and how interviewers score it.
Frameworks
Market Sizing Step by Step: Two Paths That Must Reconcile
One full US QSR market size, top-down and bottom-up with Census and BLS anchors. How interviewers score assumptions, not the final dollar figure.
Frameworks
Market Entry Cases: Go/No-Go, Mode, and Payback
Interviewers score market entry as a go/no-go with a build, buy, or partner choice and a payback. Worked example ends in a priced recommendation.
Getting started
Written Case Interview: Triage the Pack, Then Defend Two Numbers
Run a BCG or Bain written case: 60- and 90-minute time budgets, a 20–30-page reading protocol, three-slide structure, and a full worked example you can copy.
Getting started
McKinsey Solve: Firm Facts, Game Map, and Process Score
What McKinsey publishes about Solve, which games candidates report, a worked Ecosystem calorie puzzle, and how each game maps to a CoachNed simulator.
Getting started
Growth Cases: Size Each Lever Before You Choose
Win growth strategy cases by sizing revenue, margin, timing, and capability for each lever—not by reciting Ansoff. Worked mid-size case plus a shorter second industry example.
Getting started
Cost Reduction Cases: Structure the Base, Not the Lever List
Win cost cases by classifying the cost base and pricing second-order effects—two worked mini-cases with payback, a lever table, and the arithmetic traps.
Getting started
Consulting Case Books: Table, Legal Paths, Week Plan
Compare Wharton, Booth, Kellogg, INSEAD, and peer club case books by vintage, cases, solutions, and skill — then use them without training solution recognition.
Getting started
Case Interview Formulas: Setup Beats Recall on the Score Sheet
Seven formula families with worked numbers and under-ten-second shortcuts, plus why stating the identity first earns more points than diving into arithmetic.
Getting started
Case Interview Cheat Sheet: Timing, Scripts, Math, Fit
A one-page case interview reference: stage timing, opening and closing scripts, ten math identities, exhibit protocol, recovery lines, and a fit checklist.
Getting started
Capital One Power Day: What the Firm Actually Scores
How Capital One Power Day differs from a consulting final: the funnel, job-fit, credit card unit economics, and a worked mini-case you can rehearse today.