Chess as a logical construct contains no luck (beyond first move selection). I'm open for this definition of a logical construct, but not excluding luck. Chess in physical form between two humans does not contain luck either. The "luck" that manifests in all examples here come from the players or the environment. On a practical level, if you attribute luck to player's decisions (mind), that is actually a matter of skill (and a lapse of skill is not luck, nor is falling prey to emotions, lack of focus, etc.). Absence of skill creates uncertainty. Games or game elements like rolling the dice purposefully create a process with an absence of skill to ensure full uncertainty. On a practical level, there are occasions in chess where this absence of skill can exist. The only difference is that you can blame the player for this uncertainty. If you attribute luck to the environment (which includes tournaments rules, clocks, what the players ate, weather, lighting, bodily urges, etc.) then that is external to the game entirely and the phrase "in chess" fails. If you attribute luck to what happened before the game (training, pet openings, etc.), that is not part of the game of chess played either. Excluding the physical environment and training from chess for the argument I am open for.
Look at it this way (anyone that wants to be reductionist and simplify this all down)...if it's not in the PGN or is a purely optional part of the PGN (which is carefully designed to encapsulate all the information needed to recreate a game of chess), it's not part of the game of chess being represented and you cannot apply external examples to it and claim luck. PGN is not a perfect format, though, so you can only use this as a good rule of thumb for trying to decide if something should be considered part of a game of chess.
That's my non-idealist version of things, which I hesitate to bring up since people will seize on anything imprecise and start to argue about what it actually means.
I can accept your version for this debate. What I can't accept is your argument that it somehow excludes uncertainty and luck.
Uncertainty of outcome and luck are not equivalent at all. Luck can only be said to apply to a subset of uncertain outcomes. I will also point out that from my end, adding in the word uncertainty (as if I ever said I exclude uncertainty along with luck from the game of chess) in order to hedge your bets means you are the one who isn't sure his argument can ultimately hold up. When two players play, their applied skill during the game, which is a range and can vary from move to move, determines the outcome. Two spectators could bet on the outcome and the loser of the bet might be able to say "I was unlucky that the player I bet on did not perform well today even though they are higher rated", but the player themselves cannot say "I was unlucky that I did not play well today against my lower rated opponent" because it was a lack of applied skill that lost them the game.
Even in the recent "but what if you just got a cancer diagnosis that morning?" example someone gave, it's sad, but still a lack of skill. Humans lack the ability to keep their emotions and thoughts out of the game entirely, yet another set of players exists that never have this particular lack of skill, and when that set of players plays, this outcome never occurs in their games of chess. By the simple technique of swapping out parts to eliminate each in turn until the faulty one is revealed, human beings have proven to be the faulty part.
Chess as a logical construct contains no luck (beyond first move selection). I'm open for this definition of a logical construct, but not excluding luck. Chess in physical form between two humans does not contain luck either. The "luck" that manifests in all examples here come from the players or the environment. On a practical level, if you attribute luck to player's decisions (mind), that is actually a matter of skill (and a lapse of skill is not luck, nor is falling prey to emotions, lack of focus, etc.). Absence of skill creates uncertainty. Games or game elements like rolling the dice purposefully create a process with an absence of skill to ensure full uncertainty. On a practical level, there are occasions in chess where this absence of skill can exist. The only difference is that you can blame the player for this uncertainty. If you attribute luck to the environment (which includes tournaments rules, clocks, what the players ate, weather, lighting, bodily urges, etc.) then that is external to the game entirely and the phrase "in chess" fails. If you attribute luck to what happened before the game (training, pet openings, etc.), that is not part of the game of chess played either. Excluding the physical environment and training from chess for the argument I am open for.
Look at it this way (anyone that wants to be reductionist and simplify this all down)...if it's not in the PGN or is a purely optional part of the PGN (which is carefully designed to encapsulate all the information needed to recreate a game of chess), it's not part of the game of chess being represented and you cannot apply external examples to it and claim luck. PGN is not a perfect format, though, so you can only use this as a good rule of thumb for trying to decide if something should be considered part of a game of chess.
That's my non-idealist version of things, which I hesitate to bring up since people will seize on anything imprecise and start to argue about what it actually means.
I can accept your version for this debate. What I can't accept is your argument that it somehow excludes uncertainty and luck.