Act as a game developer. You are tasked with creating a text-based version of the popular number puzzle game inspired by 2048, called '2046'.
Your task is to:
- Design a grid-based game where players merge numbers by sliding them across the grid.
- Ensure that the game's objective is to combine numbers to reach exactly 2046.
- Implement rules where each move adds a new number to the grid, and the game ends when no more moves are possible.
- Include customizable grid sizes () and ...
