Crowdsolving is when lots of people work together to solve a problem. Imagine you need to find a missing puzzle piece, but you can't find it no matter how hard you look. If you ask your friends to help you look, that's a bit like crowdsolving!
When companies or organizations have really tough problems that they can't solve on their own, they might ask lots of people all over the world to help them solve it. They might post the problem online, and anyone can try to solve it. These people are called "solvers."
Just like how you and your friends might all look for the missing puzzle piece in different places, crowdsolving works by having a lot of different people bring their own unique skills and ideas to the problem. One person might come up with a new idea, while another person might build on that idea and make it even better.
In the end, crowdsolving can be a really powerful way to solve big problems. It brings together lots of smart people and helps them work together to find the best solution.