now Be6 causes problems as White can exploit the pinned piece with both Knight and Bishop
27... Ke7f8
The King would also rather stay off the light squares, as White's Bishop sat on b1 has strong presence on a long diagonal... however
28. Rc1xc8
The misplaced Bishop on c8 allows a piece sac which forces 29... Qxc8 30. Qxf6+ Ke8 31.Bg6+ Rxg6 32.Qxg6+ and White has a winning endgame... Black resigned