I hang pieces a lot. Does anyone now some tips for me?

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Avatar of ChengEn2015

HELP

i am a 11 year-old with an elo of 1700 and i just hang pieces and i dont know why.

Like look at this game 

https://www.chess.com/analysis/game/live/168684268399/review

I normally dont hang pieces but now I just hang all my pieces in every game.

If someone knows what is the solution, pls tell me. 

Avatar of Fet
Before you move, always check:
1. Can my opponent take one of my pieces?
2. Can my opponent checkmate me?
3. Can my opponent do a tactic that I can't defend?