Grotesque

Wait up people. Looking at Otto's composition. The final position isn't actually checkmate at all. The pawn protects the rook at all times.

Originally posted by doodinthemood
Wait up people. Looking at Otto's composition. The final position isn't actually checkmate at all. The pawn protects the rook at all times.

What do you mean?

Oh. I'm sorry, didn't see you take the pawn beforehand.

OK
Original Problem
KxN
then promote to knight
being careful to get the tempo correct for eventual NxR mate

Originally posted by Mephisto2
What do you mean?

[fen]8/8/8/2p5/1p6/bNpp4/1pprp3/qnkbK3 b - - 0 12[/fen]

But white need to take the pawn on c5 before taking the one on c4! Or else black pushes it and the tempo is messed up.