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Antichess evaluation

So, from what I've heard Antichess is a forced win for white after 1.e3. But when I use the analysis tool on the starting position it doesn't say "mate in n". What am I missing?
Stockfish does not use the proof tree of the solution in its search, and since finding the solution took months and years of analysis, it is not surprising that Stockfish is not able to find it within a few seconds. It was already challenging to improve Stockfish to a point where it started to consider 1.e3 to be a good move, because it used to evaluate the 1...b5 lines incorrectly, but fortunately that has improved a lot, so it at least shows an advantage now for white after 1.e3.
@Finn_Pocket
"mate in n" appears when stockfish checks all answers of losing opponent
that tree is more than 1GB in size, so generating is not an option

the other way stockfish can see "mate in n" is databases
those have answers only if all tree below it is explored, which is even larger than pruned tree "to the closest FOUND mate"

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