2048 - Digital games

At the beginning, two numbers appear randomly in the board, and the number that appears may only be 2 or 4
Players can choose up, down, left, and right directions. If the numbers in the board are shifted or merged, they are considered effective moves.
If the same number is selected in the direction selected by the player, the effective movement can be merged at the same time, but it cannot be merged continuously.
All newly generated numbers from the merger are added to the effective score of the step.
Displacement occurs when there is a space in the direction line or column in front of the player
Every time you move one step, a random number (no number is 2 or 4) appears on the checkerboard space (no number)
The board is filled with numbers, unable to move effectively, negative, and the game is over
2048 on the board, winning, the game is over