Here's an actual constructed game that is presumably as long as possible (with explanation): https://www.reddit.com/r/chess/comments/168qmk6/longest_possible_ch

Here's an actual constructed game that is presumably as long as possible (with explanation): https://www.reddit.com/r/chess/comments/168qmk6/longest_possible_chess_game_88485_moves/ https://www.reddit.com/r/chess/comments/168qmk6/longest_poss...