Puzzle

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Kookaburra03
How can white win? 

DesertOrder

Nb6?

alphaous

There's no win lol

rook_fianchetto_37

Actually, Ne7+ Kf8, Nxc8 and black cannot promote due to mate

alphaous

Rxf1+ Kxf1 b1=Q+ wins on the spot for Black

rook_fianchetto_37

Oh