All problems are computer generated from positions that occurred in actual games. They represent opportunities where one player had the chance to win the game if they found the right move.
Be careful, one move is clearly better (according to KingsRow) than all the others and should win material or the game. Other winning moves are possible and may or may not give you a second chance. Your job is to find the best move. After you make a move the computer may attempt a defense and you'll have to continue the winning line for a few moves.
If you get it wrong, check out the right side panel for hints as to what move was better. Lastly, for checkers newbies, remember that if you can capture a piece you must!