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Suggestion: Antichess 30-move rule

#4 I think there is a general ruling principle from standard chess that if either side actually has the opportunity to lose on the board, it should be played out. (eg. If you move your king too close to the opponent's king, you allow the opponent to giveaway their king).

Something like opposite color BvB is different because neither side has any possibility to lose with any sequence of moves.
I just realized KvK presents a really interesting situation with both players super low on time. You could bluff your opponent by making an instantly losing move (putting your king 2 squares away from the opposing king). But by doing so you could possibly catch them on premove and get the opportunity to get rid of your king if they choose incorrectly.

It's like a game of chicken, both players are trying to get out of each other's way - unless one side tries to be tricky and win with an instantly losing move. High stakes move!
In chess there are certain positions which require almost 1000 moves to win with perfect play. Do you have any such numbers for Antichess. I think it would be necessary to study that before modifying fifty move rule to 30. Even in normal chess, there are situations where for example, Ka1, Pa4, ka8, pa5 when two sides could move forever. At least KvK in chess is more interesting as @crptone noted earlier.
#6 I have used that trick in my games before.
#8 Bear in mind FIDE once extended the 50-move rule due to theoretical endgames, then quickly realized their mistake.

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