Actually, it's 3. Nd5+ followed by 4. Re5#
Oh yes, you are right!
Indeed, brilliant #6. White starts and checkmates in 6 moves. Don't be confused by weird comments in the posts.
incredible mate!!! only solved with help from some of the comments... analysed it afterwards and it's insane... thank you so much for putting this out there!!!
Actually, it's 3. Nd5+ followed by 4. Re5#