scoreboard players add @s KyuDummy 0

#check the 4 corners of the structure to see if the ground is SOLID blocks, and the block above each of those is NON-SOLID(air, flowers, water, etc)
execute positioned ~4 ~ ~-3 run execute unless block ~ ~-1 ~ #suhc:bloodboltpassthrough run scoreboard players add @s KyuDummy 1
execute positioned ~-4 ~ ~-3 run execute unless block ~ ~-1 ~ #suhc:bloodboltpassthrough run scoreboard players add @s KyuDummy 1
execute positioned ~4 ~ ~-3 run execute if block ~ ~ ~ #suhc:bloodboltpassthrough run scoreboard players add @s KyuDummy 1
execute positioned ~-4 ~ ~-3 run execute if block ~ ~ ~ #suhc:bloodboltpassthrough run scoreboard players add @s KyuDummy 1
execute positioned ~4 ~ ~-6 run execute unless block ~ ~-1 ~ #suhc:bloodboltpassthrough run scoreboard players add @s KyuDummy 1
execute positioned ~-4 ~ ~-6 run execute unless block ~ ~-1 ~ #suhc:bloodboltpassthrough run scoreboard players add @s KyuDummy 1
execute positioned ~4 ~ ~-6 run execute if block ~ ~ ~ #suhc:bloodboltpassthrough run scoreboard players add @s KyuDummy 1
execute positioned ~-4 ~ ~-6 run execute if block ~ ~ ~ #suhc:bloodboltpassthrough run scoreboard players add @s KyuDummy 1

#if any one block check fails, kill the marker
kill @s[scores={KyuDummy=..7}]