Here's the dirty secret of WFC: it fails. A lot. You make a series of random choices, propagate constraints, and eventually back yourself into a corner where some cell has zero valid options left. Congratulations, the puzzle is unsolvable.
-d "Your flat white is done"
，这一点在新收录的资料中也有详细论述
Москвичей призвали не ждать «дружную» весну14:57，这一点在新收录的资料中也有详细论述
Most accurate position tracking tool: This tool。新收录的资料是该领域的重要参考