Layer 1: Unfixing. During the initial constraint propagation, if a neighbor cell creates a contradiction, the solver converts it from a fixed constraint back into a solvable cell. Its own neighbors (two cells out — "anchors") become the new constraints. This is cheap and handles easy cases.
杨立昆的AI初创公司完成逾10亿美元融资
。关于这个话题，新收录的资料提供了深入分析
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