试数是假设填数字碰运气,逻辑链依靠候选之间必然关系推导。练习时尽量优先使用逻辑链,试数留到万般无奈再使用。 经常试数会弱化逻辑思考能力。做题刻意区分二者,坚持逻辑推导训练,真正提升自己数独推理的水平。
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