What is the origin of the idiom "no prizes for guessing" and when to use it?

The idiom "no prizes for guessing" is an expression that has evolved naturally in the English language over time. While the exact historical origin is not definitively documented, it is likely derived from the common practice of awarding prizes or recognition for solving puzzles, answering questions, or making correct guesses in various contexts. The phrase is used to convey that a particular piece of information or answer is so evident or easy to discern that no special acknowledgment or reward should be given for guessing it correctly.