在国内市场，智能扫地机器人业务及洗地机业务在国家“以旧换新”补贴政策的带动下，需求相对旺盛，同时公司通过技术创新和产品创新持续推出符合消费者需求的新品，并且进一步完善产品矩阵和价格矩阵。
The first thing we have to do with a command-line, which we haven't done so far, is to take user input. This can be done with the following code:
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Each piece type has its own generator macro. For sliding pieces (bishop, rook, queen), ray-casting is done via recursive macro expansion along each direction, stopping when hitting a piece or the edge of the board. For knights, all 8 L-shaped jumps are checked with boundary validation. Pawns have the most complex logic: single pushes, double pushes from the starting rank, diagonal captures, en passant, and promotion.