This year Houdini and Komodo made it to the finals in the TCEC championship, which consisted of a 100-game match, winning by a score of 53-47. This is interesting, but I don't put a lot of stock in this event because both engines were running on 44 processors and often reached search depths of 40 ply. That's a few more processors than I use. In THIS Chessbase article the programmers discuss their programs. It may all end up being a moot point thanks to the AlphaZero project.