The pro strat in 5D Chess: Make as many parallel universes and alternate timelines as you can until it crashes your opponent's PC

But how do you ensure your own PC doesn't crash before the opponent's does?

get a better PC

5d chess is pay to win

rigged

there's an AI that legitimately learned this strategy

although not for chess

tic tac toe

oh yeah the infinite-board tic tac toe one

it would just make a move so far out that the opponent's hardware couldn't hold the board anymore