Black to play and win
A Memmel v I Peenz 1985
A nice calculation exercise today. The first move, 1…Ne4!, is obvious, and, even if it weren’t , would need to be looked at because of examine all biffs.
White must take the queen, after which 2..Bb4+ 3 Ke2 Rf2+ 4 Ke3, but is it mate?
A quick further piece of calculation proves it is: 4…Bc5+ 5 Ke4 Rf4+ 6 Ke5 Bd6, a sort of staircase mate with rook and bishop.