I used to play chess in college with a master (now grandmaster) player. He would always let me take back moves when I did something stupid (sometimes even a co

I used to play chess in college with a master (now grandmaster) player. He would always let me take back moves when I did something stupid (sometimes even a couple). As he put it it was no fun to win on someones goof, what was fun was winning when they were playing the best possible game they could.