What are the moves of chess players?

Soldiers can move forward, backward and walk left and right, but they can't cross one block, but they can cross two adjacent blocks.

The formula of chess Juexue: Remember the formula of chess: a horse goes to the sun, like a field, a car goes straight, a cannon goes over the mountain, and a veteran never leaves the back garden. The pawn crossed the river and never came back.

Chess Manual: Generals don't leave Jiugong, but scholars only follow officials. The elephant flew to the four corners of the camp, and the horses ran step by step. ?

The cannon must be fired every other child, and the car shop will go straight to the west. ?

A pawn can only take one step, but he can cross the river without leaving a trace.