Originally posted by hypothetical
[fen]8/8/8/2p5/1pp5/brpp4/qpprpK1P/1nkbn[/fen]
White to move and mate in 16!😀
1.Kxe1 Qa1 2.h3! Q~ ... 7.h8N Q~ ... 11.Nxc5 ... 14.Nxc4 Q~ 15.Na5 Qa1 16.Nxb3#
I prefer this version, with no duals for White, and a less-obvious first move:
#13
