Prompt Engineering / Chain-of-Thought

Rewrite any prompt to require explicit reasoning before answering — preventing intuitive leaps.
Difficulty: Intermediate
Model: GPT-4 / Claude / Gemini
Use Case: Math Problems, Logic Questions, Multi-Step Tasks
Updated: May 2026
Why This Prompt Exists
Models guess. When they guess correctly, you trust them. When they guess wrong, you’re confused why. Forcing reasoning prevents guessing.

You get:

  • correct answers with no insight into how the model got there
  • wrong answers that seem plausible (because you can’t see the flawed reasoning)
  • inability to debug or improve the prompt (no trace to examine)
  • overconfidence in model outputs (they sound confident even when wrong)
  • repeated failures on the same type of problem (no learning from mistakes)

But explicit reasoning changes everything:

  • forces step-by-step: model can’t jump to conclusion without walking through it
  • reveals assumptions: what the model thinks is true (but may not be)
  • enables debugging: you can see where the reasoning goes wrong
  • improves accuracy: models with reasoning steps are more accurate
  • builds trust: you can verify the logic, not just the answer

Without forcing reasoning, you accept guesses.

This prompt rewrites any task to require explicit step-by-step reasoning.

The Prompt
Assume the role of a reasoning engineer who forces explicit step-by-step thinking.

Your task is to rewrite a prompt to require reasoning before the answer.

Generate:

1. ORIGINAL PROMPT
   - The prompt as written (likely missing reasoning instructions)

2. REASONING REQUIREMENTS
   - What steps are needed to solve this problem?
   - What assumptions must be stated explicitly?
   - What edge cases need checking?

3. REWRITTEN PROMPT (with forced reasoning)
   - Add instruction: "Before giving your final answer, show your reasoning step by step."
   - Structure: "Step 1: [first step]. Step 2: [second step]. ... Final answer: [answer]."
   - Require explicit assumption statements
   - Require verification of each step

4. BEFORE/AFTER COMPARISON
   - Show how the rewritten prompt changes model behavior

5. WHEN TO USE (and when NOT to use)
   - Use for: math, logic, diagnosis, planning
   - Avoid for: creative tasks, summarization, tasks where speed > accuracy

6. READY-TO-USE PROMPT
   - Copy-paste version of the rewritten prompt

INPUTS:

Original prompt:
[PASTE THE PROMPT THAT NEEDS REASONING]

Task type:
[MATH / LOGIC / DIAGNOSIS / PLANNING / OTHER]

Desired detail level:
[MINIMAL (just key steps) / STANDARD / VERBOSE (explain every assumption)]

Model:
[GPT-4 / CLAUDE / GEMINI]

RULES:
- Always separate reasoning from final answer (use headings or delimiters)
- Require explicit restatement of the problem before solving
- Require assumption checking (what am I assuming that might be false?)
- Require step verification (how do I know this step is correct?)
- For multi-path problems, require consideration of alternatives
How To Use It
  • Run this on any prompt where accuracy matters more than speed.
  • Use the rewritten prompt for math, logic, and diagnostic tasks.
  • Don’t force reasoning for creative tasks (it can stifle creativity).
  • Train your team to recognize when a prompt needs reasoning vs. when it doesn’t.
  • Save the rewritten prompt as a template for similar tasks.
Example Input

Original prompt:
“What is 15% of 280?”

Task type:
“MATH”

Desired detail level:
“STANDARD”

Model:
“GPT-4”

Why It Works
Most prompts ask for answers directly — which works for simple recall but fails for reasoning tasks.

This framework improves outcomes by forcing:

  • step-by-step structure (no leaps allowed)
  • explicit assumptions (what the model takes for granted)
  • verification requirements (checking each step)
  • separation of reasoning from answer (auditable trace)
  • edge case consideration (what could go wrong)

Great step-by-step forcing doesn’t slow down the model meaningfully — it prevents wrong answers.

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See also  CoT Verification Loop