It's not chess that does that miracle. It's human nature.
We like to play and we like to compete. Chess have both. Simple as that.
But as chessplayers we like to believe that chess is different.
I used to play Risk online, occasionally pool(really relaxing) and hearts(card game) and they were no different than a game of chess. People from all over the world playing and competing.Having fun, getting angry, forgetting their problems for a few minutes or a few hours.
Oh my, I haven't played Hearts in ages! I love that game. I just love "Shooting the Moon" and passing 3 cards that really ruin my opponent's hands. Such a fun game.
The beauty of chess is it can be whatever you want it to be. It transcends language, age, race, religion, politics, gender and socioeconomic background. Whatever your circumstances, anyone can enjoy a good fight to the death over the chess board.