Yes, truly amazing. I stared at this puzzle for a week and I could not mentally work it. Today I sat down and worked it OTB, and it still took a few persistence hours to figure it out. Cheers to the composer, Adolf Andersen (thanks Dave).

I especially love how it solves the problem of preventing the black queen from taking at d5 after the rook check by making black take with the bishop at e5 first.

I love this problem. I don't know for sure that jmohd is correct, but that mate in 5 outlined is quite pretty- it solves all the problems I see by forcing black to block the king's retreat with his own men.

1. Be5+ Bxe5 2. Nf5+ Qxf5 3. Rd5+ Bxd5 4. Nb5+ axb5 5. c3# forced