Most candidates treat "case practice" as one activity. It is not. Typing a full case and speaking a full case test different failure modes, and running the wrong one first is how people burn six weeks sounding polished while still leaking structure, or sounding panicked while the underlying logic was never installed.
CoachNed has one library of 64 original cases and two full-case surfaces that use them: guided text mode, and a live voice interview with Ned. Both end in the same seven-score debrief. The mistake is treating those surfaces as interchangeable. After this piece you should know which mode to open on a given night, how to read the score sheet, and how to sequence guided and voice across a recruiting window without inventing a third plan.
Ned built CoachNed. This is the product description from the person who scores the cases.
What firms say they are scoring
McKinsey's interviewing page describes a problem-solving interview as a client scenario where they watch how you structure ambiguous problems, work with facts and data, form conclusions, and articulate a recommendation. BCG's case-prep page lists structure, questions, analysis, calculation, communication, business judgment, and creativity—and states plainly that there is not always a single right answer (BCG case interview preparation). Bain's case-interview page frames preparation around clarifying the objective, structuring your thinking, and thinking aloud (Bain case interview).
None of those pages ask you to "practice cases" as a single verb. They describe skills that have to hold under conversation. Guided mode is where you build those skills without the microphone. Voice is where you prove they survive the microphone.
The two surfaces, same library
Open /consulting-cases and you will see the full set: 64 original cases, each available guided (typed), live with Ned (voice), and in read mode with model moves. Pricing is explicit that every plan is the whole stack: live interviews, AI debriefs, drills, Casey, CCA, PEI, resume—open for a free week with no card, then Season Pass at $120 for 90 days or Pro at $49 a month, with a 14-day no-questions refund (CoachNed pricing).
| Surface | What you do | What the system can see | Best use |
|---|---|---|---|
| Guided | Type answers turn by turn on a full case | Content, structure, math, exhibit reading, synthesis | Install thinking; catch one leak before it compounds |
| Live voice | Ned asks out loud; you answer out loud (or type a turn) | Everything guided sees, plus pacing, recovery, spoken clarity | Rehearse the room once the content is stable |
| Read | Study model moves on the same case | Nothing scored | After a graded run, not instead of one |
Guided is not "easier Voice." Voice is not "Guided with a microphone." Guided removes delivery noise so the score sheet can blame the thinking. Voice adds delivery noise so the score sheet can also blame the room.
The seven scores both modes return
After a completed run—typed or spoken—you get the same seven dimensions. They are the ones Ned grades against in the product:
| Dimension | What the interviewer is listening for |
|---|---|
| Structuring | A decision-ready MECE tree, not a laundry list |
| Hypothesis | A testable answer early, updated when evidence arrives |
| Math | Correct arithmetic, units, and a business implication |
| Charts / exhibits | What the exhibit says, and what it means for the decision |
| Synthesis | A recommendation with one number, one risk, one next step |
| Communication | Clear turns; in voice, also pacing and recovery |
| Business judgment | A call a client would recognize as useful |
Guided Communication is content clarity on the page. Voice Communication adds filler, silence, and how you recover when a follow-up lands mid-sentence. Do not treat a strong guided Communication score as proof you will sound ready in a partner interview.
Ned's rule. If you cannot beat your own typed score on the same case with the microphone off, do not add the microphone. Voice practice on a broken structure only makes the broken structure fluent.
Worked example: HarborLine Parcel (original)
A regional last-mile firm delivers 42,000 parcels a day. Contribution per parcel is $1.80. Fixed network cost is $48,000 a day. A city wants a same-day SLA that would cut daily volume 8 percent and raise variable cost $0.25 per remaining parcel. Should HarborLine accept?
Bad structure (typed or spoken): "Look at volume, costs, and brand." That is three nouns. No decision metric.
Better structure: Accept only if daily contribution still covers fixed cost after the volume loss and the variable-cost increase. Metric: daily contribution margin versus $48,000.
Math a reader can reproduce:
- Current contribution: 42,000 × $1.80 = $75,600. Surplus over fixed: $75,600 − $48,000 = $27,600.
- New volume: 42,000 × 0.92 = 38,640.
- New contribution per parcel: $1.80 − $0.25 = $1.55.
- New daily contribution: 38,640 × $1.55 = $59,892.
- Surplus: $59,892 − $48,000 = $11,892.
Recommendation: accept on contribution grounds; flag SLA risk and ask for a pilot on the densest two zones before network-wide commitment.
In guided mode, if your structure was the laundry list, you see that failure before you invent math on a bad tree. In voice, the same mistake often survives until minute twelve because you are busy sounding confident. That is why the sequence matters.
When guided comes first
Use guided when any of these are true:
- You have not finished a full case alone without a peer holding your hand.
- Your last debrief named Structuring, Hypothesis, Math, or Charts / exhibits as the leak.
- You need time to write the tree and check units before the next prompt.
- A microphone would only add panic to a content problem.
Guided is the unit-test environment for the case arc: clarify, structure, dig, calculate, synthesize. Take the feedback after each turn seriously. If Math is a 2, stop and run /drills/math or /drills/quick-math before another full case. Another guided case on a broken math habit mostly rehearses the habit.
When voice comes next
Use live voice on /interview (CopperCup is the public ~18-minute path) or a voice-ready case from /consulting-cases when:
- Your guided scores on content dimensions are stable enough that you are no longer inventing a new framework every run.
- The remaining risk is how you sound while delivering the same quality of answer under follow-ups.
- You need recovery practice: Ned waits, asks, and follows up the way a real interviewer does.
Pricing language is blunt about volume: sit forty cases before first round, not four. Voice is how you get that volume to feel like the room. Guided is how you make sure those forty are not forty copies of the same structural leak.
A four-week sequence that respects both modes
Ned's estimate for a candidate with six to eight weeks before first rounds—not a firm figure, a planning heuristic:
| Week | Primary surface | Goal |
|---|---|---|
| 1 | Guided + drills | One full guided case; map the lowest two of the seven scores to drill rooms |
| 2 | Guided majority | Three guided cases on different industries; kill the same error class twice |
| 3 | Mix | Two guided, two voice; compare Communication and Synthesis across modes |
| 4 | Voice majority | Four voice runs; one human peer or coach hour only if presence is still the leak |
If week 3 voice scores collapse on Math while guided Math was fine, you do not need more cases. You need timed math under speech. That is a drill problem wearing a voice costume.
What exists, and what does not
Describe only the product that ships today. CoachNed gives you 64 original cases; guided typed mode; live voice with Ned; a seven-score debrief on Structuring, Hypothesis, Math, Charts / exhibits, Synthesis, Communication, and Business judgment; 550+ drills; assessment simulators; behavioral / PEI; and a resume report. Access: everything open for seven days, no card; then Season Pass $120 for 90 days or Pro $49 a month; 14-day refund, no questions. Annual at $249 exists for candidates recruiting across two cycles.
CoachNed is independent and not affiliated with McKinsey, BCG, Bain, Deloitte, or any firm named above. Firm career pages describe what they look for; they do not endorse this product.
Practice this today
- Open /consulting-cases and pick an Easy or Medium case in an industry you have not memorized.
- Run it guided. Write a decision metric before you dig. Finish the debrief.
- Note the lowest dimension. Run that drill once (structure, math, charts, or synthesis).
- Tomorrow, run the same case in voice only if Structuring and Math were not the bottom two scores. Otherwise run a different guided case first.
- If you want the five-minute first rep with no account friction, start at /start. For the public live path, use /interview.
Frequently asked questions
What is guided case practice on CoachNed?
Guided mode is a typed full case from the 64-case library. You answer each prompt in writing, get feedback in the loop, and finish with the same seven-score debrief used after voice. It is built for installing thinking before you add spoken pressure.
How is guided different from the live voice interview?
Same cases, same seven scores. Guided is typed; live voice has Ned asking out loud while you answer out loud (you can still type a turn). Use guided to fix content leaks; use voice to rehearse delivery and recovery once the content holds.
Is CoachNed free to try?
Yes for seven days: everything open, no card. After the week, Season Pass is $120 for 90 days or Pro is $49 a month, with a 14-day no-questions refund. Quick math and a few sample materials stay free forever. Details are on /pricing.
How many cases are there?
Sixty-four original cases on /consulting-cases, available guided, in voice where the case is voice-ready, and in read mode with model moves. Pricing also notes the live stack includes dozens of voice-ready originals in that set.
Who built CoachNed?
Ned—Edward "Ned" Calder, a Big Four Strategy & Operations partner—built it. The grading language and the guided-versus-voice split come from how he actually scores interviews, not from a generic chatbot wrapper.
Sources
- Interviewing at McKinsey — official description of problem-solving interviews: structure, facts and data, conclusions, articulation. Checked 2026-09-24.
- BCG case interview preparation — official BCG framing of case skills and the absence of a single right answer. Checked 2026-09-24.
- Bain preparing for the case interview — Bain's official case-prep materials and emphasis on structure and thinking aloud. Checked 2026-09-24.