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tyen0 t1_irnynw8 wrote

This analysis excludes the first four moves.

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DoeCommaJohn t1_irok1o2 wrote

But it’s possible that the gentlemanly thing extended past the first 4 moves and people were intentionally making suboptimal moves. It’s also possibly something else, like maybe chess became less popular or maybe chess became so popular that less skilled players entered candidate tournaments.

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