Could not solve a two-mover :-(

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Crazychessplaya

Guys, I am ashamed to report that I could not solve this mate in two:

Puig, Skakbladet 1906

rooperi

not easy, lol

-waller-

Got it, but definitely a hard one. Solution in white:

1.Ra4! (At least I hope so!)

heinzie

Shame on you

stephen_33

That's quite a tough one - tales a while to see the pattern.