CoTadvanced

Chain-of-Thought

A reasoning framework that forces explicit step-by-step thinking before the answer. Improves accuracy on maths, logic, and multi-step problems.

The components

1
Problem framing
A clear statement of the problem the LLM is solving.
2
Reasoning instruction
An explicit directive to think step by step before answering.
3
Answer instruction
An explicit directive to give the final answer at the end, clearly separated from the reasoning.

Worked example

Rough prompt

If a train leaves Mombasa at 6am at 80kph and another leaves Nairobi at 7am at 100kph, when do they meet?

Super-prompt produced by CoT

[Problem framing] Two trains travel between Mombasa and Nairobi (approximately 480 km apart by rail) toward each other. The first leaves Mombasa at 06:00 at 80 km/h. The second leaves Nairobi at 07:00 at 100 km/h. The user wants to know the time at which they meet, accounting for the staggered departure.
[Reasoning instruction] Solve this step by step. First, compute the distance the first train has covered by 07:00. Second, compute the remaining distance between the trains at 07:00. Third, compute their combined closing speed. Fourth, compute the additional time required to close that distance. Fifth, add that time to 07:00 to find the meeting time. Show each step explicitly.
[Answer instruction] At the end, on a new line beginning with the word "Answer:", state the meeting time as HH:MM in 24-hour format. Do not include the reasoning in the answer line.

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