In my opinion it's not very good puzzle. After you see the solution, Whites victory isn't obvious.
The solution takes careful planning but the majority of enthusiastic puzzlers reached the controversial solution without flaw ! The solved flag indicates correctly that white will win this one without a blunder ! After pawn to e6 + Check only two moves are required to convert it to Queen status The Black King must back up ( g8 is best ) or risk Rook f2+ check holding f1-f8 file ! Black must attempt if possible to exchange Rooks and begin a long balanced outer pawn rush ! I'll play white anytime ! Cheers !
What is good about gambits?