that every sister is doing something different. But it never actually says that.
That’s what makes this type of riddle so entertaining. The answer isn’t hidden in complicated mathematics—it comes from paying close attention to the information you’ve been given.
A Simple Lesson in Observation
When solving brain teasers, don’t immediately add information that isn’t there.
Instead, ask yourself:
“What does the puzzle actually tell me?”
Sometimes the answer becomes obvious once you stop making assumptions.
So, Did You Get It?
If you immediately realized that Kate needed a chess opponent, congratulations—you caught the trick!
How long did it take you to find the answer?