Can it mate?(white to move)
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white to move,how to win？
what about f6?
Looks to me like there is no mating attack and also no need to look for one. White has a dominant space advantage and can take control of the only open file by playing a rook to b1.
However, black threatens gxf5. So first, g4 then rook over. If black plays Rb3, white plays Rfc1, then Rab1 and infiltrates on the b-file.
