I thought my six-year old son might have an aptitude for playing checkers, so I decided to teach him the rules of the game.
As we played, he jumped over my players and claimed them, and I jumped over his players and claimed them.
He suddenly took a good look at the board and realized that I had jumped over more of his players. What did he do? He grabbed the players he had won from me and put them down on the board on his side. Then he proceeded to jump over my players.
"What are you doing?" I asked.
"I needed reinforcements so I used your prisoners for my army."
Now there's some strategy!