At one point, I believed that 1.f3 or 1. ... f6 were the two worst opening moves, but I've seen some very interesting games won by players using those moves. I suppose you can play one or two really lousy moves that don't give up material and make up for it grandly. At least others can.
Worst opening move
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I'm not too sure about that, I used it on three people, and won twice and the third the guy's time ran out I can possably get the games, but it will take some time.
Which of the 20 possible 1st moves is the worst.