Which chess is the deepest?

See Invincible Outside the Cave first, then the Eighteen Changes of Jin Peng, third the Secret of Oranges, fourth the Plum Blossom Spectrum, and fifth the Anti-Plum Blossom Spectrum. That's all I know. The above chess score is divided into "invincible from the hole". I don't know, the rest are under development. The Secret of Oranges corrected some mistakes in Eighteen Changes of Jin Peng and added a lot of creativity. The secret of plum blossom spectrum to orange. Read ancient books, unless you are a provincial professional chess player, don't read the present. Because most of the current chess manuals are not creative or have little creativity, they are basically just correcting mistakes in ancient manuals. Most ancient books are creative, and many or all of them are creative. Generally speaking, the more you read ancient books, the more you like to read them. I almost forgot to eat. I fell asleep after reading chess books for less than an hour now. It's hard to know the principle by looking at the current chess score, but it's easy to see the principle by looking at the ancient score. Of course, there are also many ancient spectrum errors.