🧩 Reasoning Prompt Engineering Challenges
7 free reasoning challenges — beginner to expert. Each one is a goal-bound exercise with hints and an example prompt structure.
Reasoning prompt engineering pushes a model to think, not just answer. These challenges train assumption-spotting, steel-manning, counter-argument generation, and selective justification — the techniques that separate a shallow answer from a rigorous one.
The River Crossing
Solve a classic constraint puzzle using a step-by-step prompt that forces the AI to verify each step before proceeding.
Find the Fatal Flaw
Identify the single most fatal flaw in a business plan — the one assumption that, if wrong, collapses the entire model.
What's Missing
Identify what a startup pitch is missing — not what's wrong with it, but what information a rational investor would need before deciding.
Step Sequencer
Re-order a scrambled list of steps to achieve a goal — with a justification for any non-obvious ordering decisions.
Spot the Hidden Assumption
Identify the unstated assumption in an argument — the one the argument collapses without, but that is never made explicit.
The Contrarian
What would a thoughtful contrarian say about a widely-held belief — not just disagreement, but a substantive alternative view?
Best Counter
Generate the single strongest counterargument to a position — stronger than what a typical opponent would raise.