Company assessment practice.
McKinsey Solve and Bain assessments. Learn the format. Try it free.
Loading your assessments…
McKinsey Solve and Bain assessments. Learn the format. Try it free.
Loading your assessments…
McKinsey Solve and Bain assessments. Learn the format. Try it free.

Find evidence. Calculate. Build your report.

Build a treatment from three microbes.

Make decisions as the evidence changes.

Rehearse the complete sitting.
Independent practice scenarios. Formats can vary by office and assessment cycle.
Choose a task, learn its controls, then try the timed sample. These are original CaseStar practice scenarios with review—not the official assessment.
On CaseStar, start with an 8-minute Red Rock study sample or a 10-minute Sea Wolf site. Sustainable Future Lab also has an approximately 6-minute sample. Read each brief and try the untimed tutorial before starting a clock.
Red Rock practice focuses on evidence, calculations and reporting. Sea Wolf practice focuses on selecting microbes that meet site requirements. Sustainable Future Lab practice focuses on priorities and branching decisions; its format is candidate-reported, not named on McKinsey’s public Solve page.
No. CaseStar provides independent practice scenarios, not McKinsey software, leaked questions or an official assessment. McKinsey describes Solve as a problem-solving assessment. Your invitation is the authority for your actual tasks, timing and permitted tools.
The introductory samples and tutorials are free. Full-run access is checked before a simulation starts. Eligible accounts may have a first full attempt available; Red Rock’s bounded sample ends at its access gate. See the pricing page for current Solve Pass and package options. Simulator access is separate from live-interview case credits.