"Only teaches two useful lessons" seems a little certain. Off the top of my head I can think of a number - the value of diversity and the contextual power of c

"Only teaches two useful lessons" seems a little certain. Off the top of my head I can think of a number - the value of diversity and the contextual power of capabilities such as the power of weaker pieces used diligently, and the power of counterintuitive sacrifices. Chess also makes no accommodation for your fantasies and ego. There is no luck, only skill. There is also much to be garnered from the layered complexity of strategy, where some strategies will take you to a certain level of play that need to be completely replaced or expanded with nuance to reach a higher level. There are many lessons to be learned from chess. That said, I would not recommend anyone become good at chess to get good at life.