The values of the pieces are:
Pawn: 1
Knight: 3
Bishop: 3
Rook: 5
Queen: 9
So for example, trading a rook for a knight is a bad trade because you lose 2 points.
For new players, the best way they can improve their results is to be very greedy with their pieces! Don't lose even a single point for free. If your opponent captures a pawn, and you recapture to keep the points equal, then that's fine, but don't make bad trades or lose anything for free.
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In the beginning of the game, you have 3 goals:
1) Put a pawn on one of the 4 center squares (e4, d4, d5, or e5)
2) Castle your king to a side of the board where the 3 pawns in front of the castled king are still on their original squares.
3) Move all your knights and bishops off the back rank, and also your queen
If you complete all 3 steps, then there will be no pieces between your two rooks on the back rank.
Here's an example of what that looks like for white
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Here's another example
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Experiment on your own by playing against yourself. Try to complete all 3 steps in 10 moves or less.
https://www.chess.com/analysis
If you can do that plus try your best to not lose any points, then your results should improve a lot.
Help me please. Im stuck at 140 rating. All the players here are so bad that they are somehow good in a way thats hard to explain. Does anyone have any tactics to anihalate 100-500 rated players?