I want to remove the block behind a player, if he gets punched into it. If player A hits player B standing in front of a block and he gets knocked into the block(s), I want these blocks to get destroyed. I want the blocks also to be destroyed, when player B is not instantly in front of these blocks, but he hits it due to the knockback he received. Does somebody know, how I can make this happen? If this is possible in higher versions, please let me know also.