How to make a Pickaxe mine 3x3x3 blocks in MINECRAFT Java?

Описание: ya

i died to a creeper

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this is the code...

Repeating Always active Command block -- execute if entity @a[scores={mine=1}] at @a run fill ~-1 ~ ~-1 ~1 ~2 ~1 air destroy

Chain Always Active Command block -- scoreboard players set @a mine 0