The news that AlphaZero annihilated Stockfish after practising chess for just 4 hours should give us pause for thought. Humanity basically lost the battle against computers when Garry Kasparov went down against Deep Blue, but now things have moved to a totally different level. I suspect that it could play a simultaneous display against the top ten human players and just take them apart.
In one sense this does not matter, humans do not race against cars and human chess players cannot compete against machines. But for many years there was a belief that they could, that the human mind had qualities that would at least make it into a contest. This illusion has now been swept away completely and finally.
So what about computer preparation, will this become ever more important? Frankly I think we have enough trouble remembering analysis as it is, without adding to the burden so there could be a growth in the number of players who play in Magnus Carlsen style, aiming to grind people down in the endgame. There might also be a further push towards Fischer Random Chess or other variants.
Here’s one of Youtube’s best chess commentators on one of the games from the AlphaZero – Stockfish match: