You have done ten practice cases.
Your frameworks are cleaner. Your mental math is faster. You can talk through profitability in your sleep.
Then McKinsey sends you Solve.
And there is no interviewer asking for your structure.
The format changes the problem.
McKinsey currently describes Solve as a gamified assessment of problem-solving abilities and says it is used for most consulting roles. The firm also says candidates should complete it independently and without outside tools during the assessment.
That means your case-prep reflexes help indirectly, not automatically.
The first trap is trying to turn Solve into a normal case
In a live case, the interviewer can clarify the objective.
They can give you data.
They can respond when you ask a question.
Solve removes that conversational safety net.
You need to understand the task, identify the relevant information, choose an approach, and keep moving without waiting for another person to validate each step.
No interviewer means no rescue prompt.
That is uncomfortable for students who have learned to use good interviewer communication as part of their case performance.
The underlying skill is still familiar: structured problem-solving.
But the interface forces you to express it differently.
For the deeper mechanics and practice resources, read McKinsey Solve Game: Guide & Free Practice.
The obvious preparation can become the wrong preparation
Students hear “assessment” and start hunting for formulas, memorized tricks, and exact game patterns.
Be careful.
McKinsey’s own guidance says there is no preparation required for Solve.
That does not mean you should arrive careless.
It means the useful preparation sits one level higher.
| What you may try to prepare | What actually carries across | Why it matters |
|---|---|---|
| Memorize a specific puzzle | Understand objectives quickly | The task can change |
| Practise obscure math tricks | Stay accurate under time pressure | Basic errors still compound |
| Learn one “winning” sequence | Compare options logically | You need adaptable reasoning |
| Cram the night before | Protect focus and setup | Cognitive performance needs attention |
Prepare the operator, not a script.
That includes your environment too.
Reliable internet.
A quiet space.
No interruptions.
Enough time to read instructions carefully instead of sprinting because you are nervous.
Your student strengths can still help, just not where you expect
You spend your degree switching between lectures, assignments, exams, club work, and deadlines.
That may feel unrelated to consulting.
Yet Solve can reward the same habit that gets you through a messy problem set: slow down long enough to understand what the question is actually asking.
Not what you expected it to ask.
Not what a Reddit post told you to expect.
What is in front of you.
Read before you optimize.
That sounds obvious.
Pressure makes it surprisingly difficult.
The bigger assessment strategy starts after Solve
McKinsey is only one firm.
BCG, Bain, and other consulting firms may use different online assessments, formats, and recruiting sequences depending on role and market.
Preparing for each one independently can turn recruiting into another semester of disconnected exams.
A better approach is to build reusable abilities: numerical reasoning, prioritization, interpretation, disciplined reading, and decision-making under incomplete information.
For the broader student assessment plan, read How Undergraduates Should Prepare for McKinsey Solve, BCG Casey, and Bain Assessments.
Then adapt those abilities to the invitation you actually receive.
The email matters more than the rumor.
Read the instructions.
Understand the format.
Set up properly.
Then solve the problem in front of you.
Because the biggest mistake may happen before the first task begins: preparing for the assessment somebody else took instead of the one sitting on your screen.