A strategy to consider when facing a much stronger opponent
1. Maintain a strong pawn structure and don't hang a single pawn. You will need an equal amount in the endgame.
2. Trade pieces, not pawns, as soon as possible. The stronger player's attacking chances will diminish as each piece is removed from the board.
3. Study the heck out of K+R+P vs. K+R+P and K+P vs. K+P endgames. Promote one of the foot soldiers.
The way I see it, the much stronger player has a tactical strength that will crush the weaker player and will rarely hang a piece or fall for a simple tactic like a fork, skewer or pin. By trading away the minor pieces, the queen and one rook - well - your chances have dramatically increased. The queen is worth 9 pawns. Make the stronger player work for the win!
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"Chess is 99% tactics".
I have more opportunities to apply tactics against opponents of +/- 100 strength. I'm getting more tactical practice and will get stronger over time. Playing someone 200 points stronger doesn't work for me. I wouldn't get anything out of a match against someone 400 points stronger than me on a regular basis except a major headache. I'd quit the game.
I do train with someone 600 points stronger than myself. I'll play normal chess - not the crazy sounding trade down strategy - and learn from his comments.
Yes. You seem to have put it better than I very easily
Even if it took me a few posts to get it