Birnov (1928)
White to play and draw
I saw a solution pretty quickly. Knowing that it is a composed problem means that everything on the board has a purpose, which directs one's attention to the e-pawn. So e2-e4 is likely to be involved in the solution. From there the rest is easy. But then I thought I saw a second solution. I am sad to report that I did not figure out why only one of the solutions is correct. I will post the answer below the fold.
