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That's why opening don't matter that much !
Of course, if you put a 1500 player against a GM he can afford to play around, a lot. I wonder if the guy that lost might have been even worse than me... and I'm not 1500...??!?!
I used to read articles from a chess instructor and he would give his opponents 8-10 developing moves as an advantage and beat them usually so it's nothing special when a master beats an amateur easily even after giving him an opening advantage and giving his opponent odds even more by doing a sac that did not have any merit only to win due to an opponent glaring blunder which I saw before he was forming the trap. Not really a trap in this case though, more like a hand it to me because the other guy didn't know he was throwing away the game after he moved his rook which was the only piece stopping the mayhem from happening. All this video proves, is that GM's can beat noobs with odds. An already known fact.
I guess you're trolling though. So I'll cease to waste my time from here on out. Good day!
You are so naive buddy, just because YOU think someone is a noob doesn't mean much.
Do you know him? His name his rating? No? exactly !
I don't think GM would even start the game with 15 hundred player.
Nh3, then on your next move, Ng1, them Nh3,Ng1, Nh3, Ng1, etc.
Do this for your first 5-10 or so moves, so your opponent will have his opening completed, but your board will stay exactly the same.
If you say "what? No! I can't do that! I'd loose instantly!" Well then it appears that openings are indeed important.
https://youtu.be/w9IsevPQPkc
Positional play and endgame matters the most.