I'm going to push back on that a little bit.
The actual rules of non-competitive chess are short. You can pick them up and read them, and play the game. But, let's face it - that will yield you only the most basic play possible in the game. If you want to play chess at higher levels, you need to study the play of chess. You need to read books, watch and analyze the play of others, and play the game frequently. There have been tens to hundreds of thousands of publications (books, magazines, articles, and so on) about chess that avid players consume with relish.
And chess is a game with a strictly delineated set of moves a player can legally make at any given turn. D&D, on the other hand, is a game where the space of options for a player at any given moment is vast, and not clearly demarcated.
So, I'm going to suggest that we should consider exactly what our expectations of play are on a reading of the rules, vs what we expect out of years of play and study of the game.