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The Solve Pass for McKinsey Solve practice. Credit packs for live case interviews.
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For the McKinsey Solve assessment
Solve Pass
€69one payment, no subscriptionPrice includes Dutch VAT. Securely processed by Stripe. Payment details at checkout.No expiry · yours to keep
- Red Rock and Sea Wolf generate fresh figures for new sittings. The 20-minute Lab draws from a set of missions, so a story can return. Repeats are kept separate from your progress score.
- Unlimited sittings of Red Rock, Sea Wolf, the 20-minute Lab and the full Solve mock. Practice bank · checked 28 October 2026: Red Rock 12 study structures in 8 settings; Sea Wolf uses generated sites; the full mock draws from 13 puzzle families; 20-minute Lab 12 papers across 6 stories.
- Review every Red Rock answer, Sea Wolf site, 20-minute Lab decision.
- Open a real review before you pay: Red Rock Study · Sea Wolf · Sustainable Future Lab
When is your Solve? Add the date for a plan that fits
Secure payment by Stripe. Receipt by email.CaseStar is operated by Case Study Generator, a sole proprietorship registered with the Dutch Chamber of Commerce (KvK 90905431). Questions: support@casestar.io
Your Solve Pass does not expire. Your Solve Pass stays active for as long as CaseStar offers the Solve simulators.
Use your own sitting scores to track progress.
Why €69
Sit 6 times and each sitting costs about €11.50. Sit more and each one costs less.
Your free full sitting of Red Rock, Sea Wolf and the 20-minute Lab includes its full review for 72 hours. The Pass is for sitting again and keeping every review open.
Candidates report one Solve sitting of 65 to about 95 minutes. €69 buys as many rehearsals as you need first.
Before you buy
- Is it like the real test?
- Candidate-reported task order, timings, one-way Report and calculator rule. Not McKinsey’s software. Checked 24 September 2026.
- How long do I have?
- Your Pass does not expire. Keep practising at your pace.
- Which device?
- A laptop or desktop: the real Solve needs a PC or Mac. The short samples also run on a phone.
- What is not included?
- Live case interviews and voice practice are separate: the credit packs buy those, and the Pass does not include them.
Confirm with your recruiter when you may apply or sit again; your office’s policy is the one to follow.
If Solve is all you are preparing for, the Solve Pass is the product. Live case interviews are a separate pack.
Original CaseStar practice informed by candidate reports. Your scores describe your work here.
We will not claim a pass rate or a decile, a score McKinsey would give you or a promised result. See how free Red Rock practice compares.
Inside the Solve Pass
This is what you sit, and what you get back
A real Red Rock sitting, then one marked question taken apart: the slip, the corrected answer and the method to carry into your next paper.
Inside this practice sitting
- The task
- Measure Badger’s annual growth from 2020 to 2024, then project one year forward.
- The evidence
- Follow Badger’s purple dotted line and triangle markers. The chart counts individuals.
- The move
- Five years of observations, four growth intervals. Use the fourth root of the end-to-start ratio.
The calculation Annual rate = (2024 population ÷ 2020 population)¼ − 1.
Check the result Badger declines, so the annual rate is negative. A projection at that rate must stay below the 2024 population.
For an exact answer, collect the endpoint figures from the population table; do not estimate them from the gridlines.
A real CaseStar sitting, with the objective, exhibits and clock.Inspect the complete chart at full size ↗Inspect the complete chart at full size ↗
One question. The full working.
The right change. The wrong base.
A generated CaseStar paper with an illustrative answer, marked by our Red Rock grading engine.
By what percentage did total population change between 2020 and 2024? Round to two decimal places.
| Species | 2020 | 2024 |
|---|---|---|
| Mule Deer | 499 | 634 |
| Red-tailed Hawk | 194 | 147 |
| Moose | 251 | 323 |
| Jackrabbit | 343 | 264 |
| Beaver | 391 | 468 |
| River Otter | 210 | 151 |
| Total individuals | 1,888 | 1,987 |
Reveal the marked answer and correction
The submitted answer
4.98%
Uses the ending total as the base.
The corrected answer
5.24%
Uses the starting total as the base.
(1,987 − 1,888) ÷ 1,888 × 100 = 5.24%
The change is 99 individuals. Measure it against the 1,888 you started with.
Carry this method: add the totals first, then divide the change by the starting total.
This illustrates one marked question. It is not a candidate result or a McKinsey score.
After the first miss
A miss is named, aimed at, drilled and re-tested
Your review
Names the habit
A wrong answer is traced to the habit behind it, once, in plain words: here, averaging the rates where the totals should be added up.
Your plan
Aims the next day at it
The next Red Rock day is set on that habit and carries one rule into it.
The ruleFor overall growth, add up the totals, then grow the total. Never average the rates.
A fix drill
Clears it only when all three are right
Three short questions on new numbers. Fixed, and the miss leaves your plan. Not yet, and it stays there.
A fresh sitting
Checks it carried over
A drill checks the drill. A new full sitting on a new paper shows whether the habit held under the clock.
One example of the loop, written from the product’s own rules; not a candidate’s result. With the Pass it runs after every sitting, for as long as you keep sitting.
The same money, next to what others list
| Provider | What it covers | Price | How long you keep it |
|---|---|---|---|
| CaseStar | Red Rock, Sea Wolf, Sustainable Future Lab and the full mock, unlimited sittings | €69 once | No scheduled expiry |
| Road to Offer roadtooffer.com (opens the provider’s page) | Red Rock pack: 10 Red Rock simulations | US$29 once | No scheduled expiry |
| SolvePrep solveprep.com (opens the provider’s page) | Elite Package: Red Rock, Sea Wolf and Sustainable Futures Lab simulators | US$79 once | No scheduled expiry |
| Solve Games Guide solvegamesguide.com (opens the provider’s page) | Redrock Cases | £69 once | 2-week access |
| MConsultingPrep mconsultingprep.com (opens the provider’s page) | Solve Lite: 10 Redrock practice tests and 10 Sea Wolf mock tests | US$99 once | No scheduled expiry |
Package contents differ, so read each page before you compare. If a provider changes its page, its row here is out of date until we re-check.
Plan your days
See every day from now to your Solve
Add the date of your test and these are the days the Pass would plan: which game on which day, the full mock, the night-before card. Each review then re-aims the days that follow.
Ready when you are
Unlimited sittings of all four Solve simulators
€69 once · No expiry · yours to keep. Your Solve Pass stays active for as long as CaseStar offers the Solve simulators.
Secure payment by Stripe. Receipt by email.
Preparing for live case interviews instead? See the case interview packs.