The play and rules of corner chess

Niu Jiao's chess game is very strange. In positions 1 and 2, 1, the bull is placed to Party A, and in position 3, the cow is placed to Party B. The chess pieces move up and down and left and right along the line 19, and only 1 chess position can be taken at a time. Party B goes first.

Rules:

The two sons of Party A can only get 1 at a time. In the end, Party A pushed Party B to the position of 1 1, that is, the corner, and Party A won. If Party A can't corner Party B, it will have to give up and Party B wins.

In the game of Horn Chess, the winner is always decided by two wins in three games, and the winner of each game is selected into the final. Finally, the winner of a scenic spot is called "Corner Chess Saint".

Horn chess generally uses bluestone with a length of 80 cm and a width of 50 cm, which is polished smoothly and engraved with a seal. The chessboard is like a huge corner. The inner curve and the outer curve of the trumpet-shaped pattern are determined by four points on average, and eight straight lines connect the four points of the inner curve and the outer curve. Nine connection points, the corner bottom corner and the corner tip are made into a round nest as big as soybeans, forming a 1 1 connection point as a chess position. And the chess positions are numbered from bottom to top and from left to right with invisible numbers 1 to 1 1.