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4

Let me count the reasons.... It all depends! And there is no way to answer your question exactly. GMs do not play by your arbitrary evaluation method. They play to win or possibly to not lose. While their tactics are usually very good , missing a mate in 5 while winning the game is more important to them. Depending on how they feel, how much clock time ...


9

As I do not have access to the full Lomosonov tablebases, here is an answer based on the Syzygy tablebases, which are available online in machine-readable format. I interpret your question as "how often does the side to move win, lose or draw". As the Syzygy tablebases only include positions where White has material advantage, we have to add the ...


6

I agree with the answers above, however, there are actually some cases where GMs missed mate-in-ones in classical chess while not in time trouble. If memory servers right, I have read about that a few years back on chess.com's news page, but I cannot find the article right now. The main reason is the following: Player A only needs a draw (to outright win the ...


6

This depends entirely your horizon for what you consider a missed mate. Is there any upper bounds on the number of moves required? Would you consider a "mate in 53" to be a missed mate, even if no one, human or computer, had the computational power to actually find such a mate (but maybe in 100 years a computer could show a forced mating sequence ...


18

It really depends on what counts as a missed checkmate. In Blitz we occasionally see a missed mate in 1. In slower games, mates in a few moves are rarelly missed. But the problem is that sometimes long mate sequences will be "intentionally missed", as the player will go for a solid advatange that guarantees victory rather than calculate a 15-move ...


24

Probably more often than people realize. There have been several notable instances where GMs (even world champions) have missed simple mates in one. From my own experience, when I analyze my games the engine frequently will point out some ridiculous 25 move forced mate. In a game, I'm not going to take the time to calculate something like that out if I have ...


1

0.2785 It depends a lot on the opening as each would have different preferences and pet lines. Middle games would be a bit better as there are fewer strategies to choose from for long term effort. End games should be best as the simple positions are easier to predict moves although many end games could offer more variation to try for a win than middle games. ...


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