Solving chess problems can be a great and fun way to spend a Sunday afternoon. It can also be a great way to improve your chess skills during serious games. To use chess problems as a training tool, you could use the following method. Take a problem that seems difficult for you. Then give yourself fifteen minutes. Put up the position in front of you, preferably on a chess board. You are not allowed to move the pieces while solving the problem. Now, start the timer and start thinking. Write down your answers as best you can. Write down all the moves and variations that you find, they are all part of your answer. Choose which first move you would make on the board and mark it as your solution. Then compare it with the answer. That is the method. Have you tried it? Is it hard? Can you improve it? Good luck with your training!